The One Punch Man Workout: What It Is, What It Does, and How to Actually Start It

If you have spent any time in fitness circles online, you have probably heard of the One Punch Man workout. It comes from the anime character Saitama, who claims he got impossibly strong by doing the same four things every single day for three years: 100 push-ups, 100 sit-ups, 100 squats, and a 10km run.

No gym. No equipment. No rest days.

The joke is that he trained so hard he lost all his hair. The workout itself, though, is real. People have tried it seriously, documented their results on YouTube, and come back with honest feedback about what it does to the body over weeks and months.

This post covers what the workout actually is, what it trains, why it works in theory, where it falls short for beginners, and how to modify it so you build real progress instead of just grinding yourself into an injury.

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Table of Contents

• What is the One Punch Man workout?
• What muscles does it train?
• What does the workout actually do for you?
• The big problem for beginners
• The missing piece: pull work
• How to modify it so it actually works
• How to build toward the 10km run
• What to eat to support this kind of volume
• Should you do it every day?
• What to do next

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What is the One Punch Man workout? {#what-is-it}

The routine is simple on paper.

Every single day:

• 100 push-ups
• 100 sit-ups
• 100 squats
• 10km run (roughly 6.2 miles)

That is the whole thing. No progressive overload, no periodisation, no deload weeks. Just the same four things, repeated every day, forever.

Saitama, the character it comes from, is a bald, expressionless hero who defeats every enemy with a single punch. The joke of the show is that his power came from the most boring, uncomplicated workout imaginable. There is something weirdly compelling about that idea.

People online have taken the challenge seriously. Some have done 30-day runs. Others have stretched it out for months. The YouTube documentation alone tells you the challenge resonates with a lot of people beyond anime fans.

Here are a few people who actually tried it, in case you want to see real-world results before committing:

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What muscles does it train? {#muscles}

The three bodyweight movements hit a wide range of muscles, which is part of why the workout has real merit.

Push-ups train the chest, front shoulders, triceps, and upper abs. Done properly, they also require decent core stability to keep the torso rigid throughout each rep.

Sit-ups target the rectus abdominis, obliques, and hip flexors. They are not the most efficient core exercise, but 100 reps of anything will develop muscular endurance in those tissues over time. If you want a deeper look at how to build core strength more systematically, the core strength exercises guide is worth reading alongside this.

Squats are a full lower-body movement. Quads, hamstrings, glutes, calves, and the stabilising muscles around the hips and knees all get involved. 100 bodyweight squats daily will develop real lower-body endurance and, for beginners, meaningful strength in those patterns.

Running 10km hits the cardiovascular system hard. Heart rate, lung capacity, oxygen uptake, and leg endurance all improve with consistent distance running. For people who have never run regularly, the cardiovascular adaptation alone is significant.

Together, the four movements cover most of the body. Push, legs, core, and cardio are all in there. It is not a bad coverage map for something that costs you nothing and requires zero equipment.

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What does the workout actually do for you? {#benefits}

If you stick with a version of this consistently, here is what you can reasonably expect.

Better cardiovascular fitness. Running is one of the most effective ways to build heart and lung capacity. Doing it frequently, even at modest distances, leads to meaningful gains in VO2 max and overall stamina.

Stronger legs and better squat endurance. Daily squats at high volume will condition your legs, even if bodyweight squats eventually stop building much raw strength. Your legs will not tire as quickly from walking, hiking, climbing stairs, or any activity that involves repeated lower-body work.

A more defined upper body. Push-ups build the chest, shoulders, and triceps. 100 per day across a few months will produce visible changes in those areas, particularly for people starting with less upper-body muscle.

Core endurance. Sit-ups are a bit old-fashioned as a core exercise, but volume builds endurance. Pair them with the plank and anti-rotation work and you have a real foundation.

Mental consistency. One of the underrated benefits of a challenge like this is that it is the same thing every day. There is no decision fatigue. You know what you are doing before you even start. That predictability makes showing up easier.

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The big problem for beginners {#problem}

Here is the honest part.

For someone who has never trained consistently, jumping straight into 100 push-ups, 100 sit-ups, 100 squats, and a 10km run every day is not ambitious. It is a direct route to injury.

Push-ups at that volume will destroy the shoulders and elbows if the body is not conditioned for it. Squats at 100 reps daily will light up the knees and hips in ways that make the next day genuinely painful. The 10km run is the part that worries most sports physiotherapists the most, since it puts significant repetitive load through the ankles, shins, knees, and hips, none of which are ready for daily mileage in a true beginner.

Overuse injuries do not feel dramatic when they happen. They creep in. A little soreness becomes a nagging pain, becomes something that forces two weeks off, and suddenly the challenge is over.

The other issue is recovery. Muscles repair and grow during rest. When you train the same movement every day without any variation in load or volume, the body does not get the window it needs to actually improve. Early gains can stall or reverse.

If you have already been having a look at common training mistakes, the beginner calisthenics mistakes guide has a solid breakdown of what tends to go wrong in the first few months.

The worst part of the original challenge for beginners? You might lose some hair worrying about it. (Probably not. But the soreness is real.)

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The missing piece: pull work {#pull}

The original Saitama workout has a genuine gap that does not get talked about enough.

There is no pulling movement.

Push-ups are a horizontal push. Squats are a lower-body push. Sit-ups are a core flexion movement. None of these train the lats, rhomboids, rear shoulders, or mid-back, which are the muscles responsible for pulling the shoulder blades back, keeping posture upright, and balancing out all that pressing volume.

If you do 100 push-ups every day and never pull, you are heading toward rounded shoulders, a tight chest, and a muscular imbalance that shows up in your posture and eventually in how your shoulders feel.

For anyone taking the spirit of this challenge seriously, adding a pull component is not optional. It is basic body maintenance.

The simplest fix is pull-ups or inverted rows. Even 30 to 50 ring rows or bar rows alongside the rest of the workout changes the picture dramatically. You do not need to match the volume of the push-ups. You just need the pattern in there consistently.

For a look at how to work toward your first real pull-up, the guide on how to get your first pull-up maps out the progression clearly.

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How to modify it so it actually works {#modify}

The spirit of the Saitama challenge is worth keeping: high-volume bodyweight training, done consistently, with simple movements, no equipment required. The execution just needs adjusting for real humans who want to still be training in six months.

Here is a practical beginner version that respects the original challenge while being actually survivable.

Phase 1: The first two weeks

The goal here is building the habit and conditioning the joints for the volume. Do not worry about hitting 100 of anything yet.

Each session:

• Push-ups: 4 sets of 10 to 15 reps (or start with incline push-ups if full ones are difficult)
• Sit-ups or hollow body holds: 4 sets of 10 to 15 reps
• Bodyweight squats: 4 sets of 15 to 20 reps
• Pull-ups, inverted rows, or band pull-aparts: 3 sets of 8 to 12 reps
• Run or brisk walk: 2 to 3km, 3 times per week

Rest 60 to 90 seconds between sets. Train 3 to 4 days per week. Let the off days be genuinely easy.

Phase 2: Weeks three through eight

Now you start expanding volume while keeping sets. The goal is working toward doing more reps per set without breaking form.

Each session:

• Push-ups: 3 sets of 20 to 30 reps
• Sit-ups: 3 sets of 20 to 30 reps
• Squats: 3 sets of 25 to 35 reps
• Pull work: 3 sets of 10 to 15 reps (pull-ups, rows, or band work)
• Run: 4 to 6km, 4 times per week

Rest 45 to 60 seconds between sets. As you get closer to managing sets of 30 to 35, start consolidating into fewer sets with higher reps per set.

Phase 3: Working toward the full challenge

By this stage you should be doing 2 sets of 50 across push-ups, sit-ups, and squats, and feeling like the 10km run is genuinely achievable rather than a punishment.

Continue reducing sets while increasing reps per set until you can do the 100 in one go. This could take three to six months depending on your starting level. That is fine. The consistency is the point.

Here is a short video of someone doing the workout at home with no weights for reference:

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How to build toward the 10km run {#run}

Running every day from day one is the fastest way to get a stress fracture or shin splints if you are starting from zero.

Instead, build up the distance and frequency gradually. The general rule is not to increase your weekly running volume by more than 10% from one week to the next.

Week 1 to 2: 2 to 3km, 3 times per week. Walk the parts you cannot run. That is fine.

Week 3 to 4: 3 to 5km, 3 to 4 times per week. Start running at a pace where you can hold a conversation. If you cannot speak in short sentences, you are going too fast.

Week 5 to 8: 5 to 7km, 4 times per week. Focus on consistency rather than pace.

Beyond week 8: Once you can comfortably run 7km, extending to 10km is a shorter jump than it looks. Add the extra distance over two to three weeks and you are there.

A few tips that actually help:

• Run at about 60 to 70 percent of your maximum speed. You should feel like you are working but not gasping.
• Slow down when you lose your breath. Speed up again when it comes back. This is not failure; it is smart pacing.
• If you are running daily, alternate harder and easier days. One longer run, one shorter, easier effort. The body needs that variation.

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What to eat to support this kind of volume {#diet}

Saitama's dietary advice is famously simple: eat three meals a day, do not skip breakfast, and a banana in the morning is fine.

There is actually something useful buried in there. Consistent meals, a morning anchor, and not overcomplicating food are all habits that help training. But for real people doing real volume, a bit more structure is worth adding.

Protein is the most important lever. Muscle repair requires protein. At high training volumes, aim for around 0.7 to 1 gram of protein per pound of bodyweight per day. Eggs are a genuinely good choice here, cheap, complete protein, easy to prepare. Chicken, fish, Greek yoghurt, cottage cheese, and legumes all work.

Carbohydrates fuel the training. Running 10km burns a significant number of calories. Squats at high volume require glycogen. Do not go low-carb while trying to do this challenge. Rice, oats, potatoes, fruit, and bread are all practical carb sources that support the energy demand.

Eating enough matters. If you are doing a large amount of daily volume and also restricting calories heavily, your recovery will suffer and you will feel terrible. You can still be in a mild calorie deficit and lose fat while doing this, but the deficit should be reasonable.

If you want to figure out roughly how many calories you need to support training and still lose fat, the calorie calculator is a practical starting point.

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Should you do it every day? {#everyday}

This is where the Saitama workout creates the most confusion.

The answer for true beginners is no, not right away.

The original challenge is designed around a fictional character with an anime logic of adaptation. In reality, muscles, tendons, and joints need time to recover from repeated loading. Doing 100 push-ups every day without any base of training will cause the shoulder tendons to become inflamed before the muscles have a chance to get stronger.

That said, the principle of frequent training has real support. Research does show that training compound movements more frequently, rather than once per week, tends to produce faster adaptation. Elite athletes, fighters, and gymnasts often train similar patterns daily. The key is that their bodies are conditioned for it over years.

The beginner path is: train 3 to 4 days per week initially, let the connective tissue catch up to the muscle, and then gradually increase frequency as the body handles the volume without complaint.

Once you have been training consistently for several months and the daily volume feels manageable, you can shift closer to the daily structure the original challenge demands.

If joint soreness becomes an issue as you build volume, it is worth understanding what is happening. The guide on whether calisthenics helps with joint pain explains the relationship between bodyweight training and joint health clearly.

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A note on the push-up progression specifically

The push-up is the foundation of the entire challenge, and the place where most beginners stall out fastest.

If you cannot do 10 clean push-ups right now, starting with incline push-ups against a wall or bench is the right call. There is no shame in this. It is just the correct progression entry point.

The path looks roughly like this: wall push-ups, then incline push-ups at a lower surface, then knee push-ups, then full push-ups, then eventually the volume starts building.

A beginner calisthenics workout plan will help you see how push-up progressions fit into a broader weekly structure so you are not just grinding push-ups in isolation.

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Is this the right challenge for absolute beginners?

Probably not in its original form. But adapted, it is one of the better challenges available because it is simple, requires nothing, and the progression is obvious.

The goal is clear. The movements are clear. The daily commitment is clear. Those three things alone make it easier to stick with than most elaborate training programs.

What it lacks is pull work, a beginner ramp-up, and any guidance on how to get started safely. Those are fixable gaps.

If you are brand new to bodyweight training and want a starting point that already has the structure figured out, looking at a beginner-friendly calisthenics workout before diving into the Saitama challenge gives you a foundation that makes the challenge more achievable rather than just more painful.

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One Punch Man workout: a realistic timeline

Here is an honest picture of what to expect if you take the modified approach.

Week 1 to 2: Soreness in the chest, shoulders, legs. This is normal and will ease. You are establishing a habit more than building strength right now.

Week 3 to 6: The soreness drops. You notice you are finishing your sets faster. Push-up reps per set are increasing. Running is getting easier.

Week 7 to 12: Visible change in the upper body. Legs look more defined. Running 5 to 7km feels manageable rather than brutal.

Month 3 to 6: You are approaching the full 100 reps per exercise in one or two sets. The 10km run is within reach. This is when the original challenge starts becoming achievable for real.

The people who see the best results are not the ones who hit 100 on day one. They are the ones who show up consistently for six months with a sensible progression.

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What to do next {#next}

The One Punch Man workout is a genuine training concept with real benefits, and it is made more interesting by how simple it is. Push, squat, core, run. No gear. No excuses. Daily commitment. The idea is honest even if the anime version is cartoonishly extreme.

The modifications that make it work for real people are:

1. Start at a volume your body can handle right now, not the end goal
2. Break it into sets with proper rest
3. Add pull work, which the original workout is missing entirely
4. Build running distance gradually, not all at once
5. Train 3 to 4 days per week early on before moving toward daily

If you want to figure out where your fitness actually sits before starting any version of this, the calisthenics level test takes about two minutes and gives you a starting point built around your current push, pull, leg, and core baselines. That is a more honest starting point than just guessing.

And if you want a structured daily workout that tells you exactly what to do, at your current level, with progressions that build over time, Guppy Calisthenics is built specifically for beginners who want to start from where they actually are, not where they wish they were.

The spirit of Saitama is worth keeping. The hair loss, optional.