75 Hard Challenge: Rules, Sleep Tips, and What to Know Before You Start

Short Answer

The 75 Hard Challenge requires two 45-minute workouts per day, one outdoors, plus a chosen diet with no cheat meals, one gallon of water, 10 pages of nonfiction reading, and a daily progress photo. All five rules must be completed every day for 75 days straight. Missing any one resets the program to day one.

The 75 Hard Challenge is not a fitness plan. Andy Frisella, who created it in 2019, is clear about that. It is a mental toughness program. The rules are designed to be uncomfortable on purpose.

You follow five rules every day for 75 days. Miss any one, and you go back to day one.

A lot of people who try it talk about how it changed their habits, their mindset, and how they feel day to day. Sleep is a big part of why some people thrive and others flame out by week two.

What Is the 75 Hard Challenge?

It is a 75-day program built around five daily non-negotiable rules.

Andy Frisella created 75 Hard in 2019. He designed it as a mental toughness program, not a weight loss plan. The idea is that doing hard things every day, without exceptions, changes how you handle discomfort.

The rules do not change based on how tired you are, how busy your day gets, or what the weather is like. That is the whole point.

What Are the Five Rules of 75 Hard?

Each rule must be completed every single day. There are no partial credit days.

Follow a Diet

Pick a structured eating plan and follow it with no cheat meals and no alcohol for the full 75 days. The program does not tell you which diet to follow. Popular choices include Mediterranean, keto, paleo, Whole30, and DASH.

The rule is not about which diet you pick. It is about not making exceptions.

Two 45-Minute Workouts

Complete two separate workouts, each at least 45 minutes long. One must be done outside. The two workouts cannot be combined into one 90-minute session.

This is where most people feel the physical strain. Two sessions a day with no rest days for 75 days is a serious recovery demand.

One Gallon of Water

Drink one gallon of water every day. Front-load most of it earlier in the day. Drinking large amounts close to bedtime makes it harder to sleep through the night. Read 10 Pages of Nonfiction.

Read at least 10 pages of a nonfiction book each day. Audiobooks do not count. The reading has to be an active choice, not something playing in the background. Plus, there are plenty of benefits of reading before bed.

Why Sleep Matters More Than People Think on 75 Hard

Two workouts a day create a recovery debt. Sleep is how you pay it back.

Deep sleep is when your body repairs muscle tissue, releases growth hormone, and processes physical stress from training. If you are cutting sleep short, you are also cutting short your ability to recover before the next day starts.

Research on exercise and sleep shows that regular physical activity supports deeper, more restorative sleep. [1] But the timing matters.

A hard evening workout can raise your core body temperature and heart rate enough to delay sleep onset if you do not give your body time to wind down first.

Try to finish your last workout at least 60 to 90 minutes before bed. That window gives your body temperature time to drop, which signals your brain that it is time to sleep.

Chilipad, a bed cooling system, is built for this exact problem. It lets you set the temperature from 55 to 115 degrees Fahrenheit, so your body gets the cooler environment it needs to reach deep sleep faster, even on days when your second workout runs a little late.

When you are two workouts a day into a 75-day program with no days off, how fast you get into deep sleep matters.

Chilipad doesn’t replace the recovery work. It removes one of the biggest slowdowns: poor sleep.

How the 75 Hard Diet Rules Affect Your Sleep

What you eat during the challenge has a direct effect on how well you sleep.

Clean eating plans cut out processed sugar, excess caffeine, and foods that cause blood sugar swings at night. All of that supports more stable, uninterrupted sleep.

Research on diet and sleep quality shows that better food choices are linked to better sleep. [2] That connection works in your favor during the challenge if you pick a structured plan with real food and stick to it.

For more information, here is an article on the effects of eating sugar before bed. 

One of the fastest sleep improvements people notice on 75 Hard is from cutting alcohol. Even small amounts of alcohol fragment sleep in the second half of the night, reducing the time spent in REM sleep. [4] Most people report sleeping more soundly within the first week of cutting it out.

Does Drinking a Gallon of Water Affect Your Sleep?

It can, if you drink too much of it too late in the day.

Dehydration has been linked to shorter, lower-quality sleep. [3] Getting your gallon in is a real sleep benefit. Timing is what matters.

Front-load your water early. Aim to have most of your gallon done by late afternoon. Taper off in the two hours before bed so you are not waking up through the night.

How Does the Program Affect Your Mental Health?

The reset rule is what separates 75 Hard from every other challenge out there.

Missing one task on day 60 sends you back to day one. For most people, that feels brutal. For some, it is genuinely motivating. For others, the all-or-nothing structure creates a cycle of stress and shame that is hard to break.

If you tend toward perfectionism or have had a difficult relationship with exercise or eating in the past, this program may not be the right fit right now. The pressure to never miss a day can become its own source of stress, which makes sleep harder.

Stress and anxiety are two of the most common reasons people wake up in the middle of the night or struggle to fall asleep. If the challenge is ramping up your anxiety instead of building confidence, that is worth paying attention to.

Before bed, here are some tips on how to reduce stress and sleep techniques for anxiety.

Who Should Be Careful With 75 Hard?

The program is demanding, and it is not designed for everyone.

If you have high blood pressure, diabetes, heart concerns, or any condition that affects how your body handles intense physical stress, talk to your doctor before starting. Two workouts a day with no rest days is a significant load.

Beginners who jump into the full program without a fitness base often hit a wall in the first two weeks. Injuries, exhaustion, and disrupted sleep are common when the training load outpaces the body's ability to recover.

What Is 75 Soft and How Is It Different?

75 Soft follows the same general idea with a more manageable structure.

The rules are one 45-minute workout per day (with one rest day allowed per week), eating well with one social exception allowed per week, drinking three liters of water daily, and reading 10 pages of nonfiction. There is no full reset if you miss a day.

It is a good starting point if the full 75 Hard feels like too big a jump. It still builds real habits without the risk of burnout that comes with two-a-days from day one.

The Bottom Line

75 Hard can change your habits. Sleep is what makes it possible to get there.

The five rules build discipline. The workouts build fitness. The diet and hydration rules support your body through the process. But none of it stacks up if you are not recovering well at night.

Prioritize sleep the same way you prioritize the two workouts. Time your water intake. Finish your evening session early enough to let your body cool down. Cut the alcohol from day one and let your sleep quality show you what that difference feels like.

If you want to learn more about how sleep and athletic performance connect, read about how sleep deprivation affects athletic gains and what elite athletes do differently when it comes to recovery.