Is 75 Hard worth it? A straight answer before you give it 75 days
75 Hard can be worth it if you are already active, healthy and want a strict, simple challenge. Experts like its daily habits but question the gallon of water, two workouts with no rest day, and the restart rule. Beginners and people prone to perfectionism or disordered eating are often pointed to gentler versions.
General information, not medical advice. Stop if you feel dizzy or unwell, and ask a professional about any health concern.
The short verdict
If you are healthy, already train a few times a week and like clear rules, 75 Hard can be a strong reset. If you are starting from the couch, juggling work and family, or tend to spiral after a slip, the experts we read mostly point you to a gentler version. The habits inside it are good. The all-or-nothing packaging is the part with real downsides.
What experts like about it
Nobody quoted in the coverage attacks the basic habits. Daily movement, outdoor time, reading and drinking water are ordinary advice. CNN cites the CDC saying that cutting back on alcohol can improve how you feel and lower the risk of cancer, heart disease and liver disease. A runner who completed the challenge twice told CNN that the daily reading rule built a habit that lasted.
Habit researcher Katy Milkman of the Wharton School notes that habits form through repetition and rewards, and that cutting friction makes them easier to keep. A fixed list that you repeat every day is exactly that kind of friction cut.
What experts worry about
| Concern | What was said |
|---|---|
| The gallon | A research dietitian at Northwestern Medicine does not recommend drinking that much, and warns of low blood sodium when heavy water intake is combined with a strict diet and extra exercise. |
| Two workouts, no rest day | A strength and conditioning specialist says the volume exceeds the federal activity guidelines and raises the risk of overuse injury, fatigue and burnout. |
| Restart rule | Forced restarts can feed a cycle of perceived failure when travel, illness or family get in the way. |
| Mind and body image | Cleveland Clinic flags daily photos and rigid rules as a risk for people prone to body-image concerns. A registered dietitian quoted by Garage Gym Reviews advises caution if you have a history of eating disorders. |
| Evidence | Cleveland Clinic says success stories are mostly anecdotal, with little to no scientific evidence that the programme is beneficial. |
The water rule has its own page: 75 Hard gallon of water: how much is too much.
The numbers, side by side
Put the rules next to public guidance and the size of the ask is clear.
- Training time. Two 45-minute sessions is 90 minutes a day, or 630 minutes a week. The CDC's adult baseline is 150 minutes of moderate activity a week, so this is about four times that, every week, with no rest day.
- Total time. Across 75 days the workouts alone (see the workout rules for what counts) add up to 112.5 hours, before reading, meal prep and photos.
- Fluid. A gallon is 16 cups. The NHS suggests aiming for 6 to 8 cups or glasses of fluid a day, and more if you are active for long periods, in the heat or ill. Cleveland Clinic notes that the gallon is above the general recommendation, though heavy training may raise your needs.
None of these figures say it is dangerous. They say it is a serious commitment, and you should decide with that in front of you, not after Day 9.
The five-question test
Answer these honestly before Day 1.
- Do I currently exercise most weeks? If not, two 45-minute sessions a day is a big jump. Several experts say it is too much for newcomers.
- Can I protect two daily workout slots for 75 days? Look at your calendar, not your motivation.
- How do I react to a slip? If one missed task usually turns into a week off, an all-or-nothing rule is a risk, not a motivator.
- Do I have any condition, injury, or history that a doctor should weigh in on? Cleveland Clinic and the official page both say to ask first.
- Do I want this for me, or to prove something online? Daily photos and posting can make the second reason louder than the first.
Four or five yeses: you are the person 75 Hard was built for. Two or fewer: borrow the habits and run a gentler version.
What to do instead if it is too much
The options experts mention are the softer variants. 75 Soft keeps the 75 days and the spirit but allows an active rest day, a more flexible diet and no restart. We compare them side by side in 75 Soft versus 75 Hard. Another route is to start small. WebMD's experts advise changing one or two habits at a time and building up, and the beginner prep plan shows how to use the week before Day 1.
What a good tracker adds
Whichever version you pick, you will not remember Day 31 from Day 30. A counter and a visible streak are cheap insurance. Ninety is a 90-day challenge app built on the same idea as 75 Hard: you choose your daily disciplines from 99 options, mark which ones are hard rules and which are soft, and a run of missed days triggers a choice between pausing, pushing through or starting over. If you are also comparing paper, spreadsheets and apps, read the best 75 Hard tracker guide.
Start with the complete 75 Hard rules if you have not seen the full list yet.
Questions people ask
Does 75 Hard actually work?
It depends on what you mean by work. People who finish often report feeling more disciplined, but Cleveland Clinic notes that success stories are mostly anecdotal and that there is little to no scientific evidence the programme itself is beneficial.
Is 75 Hard safe?
For a healthy, already-active adult it can be manageable, but experts flag overuse injuries, burnout and the water target. Talk to a doctor first if you are new to exercise, have a medical condition or a history of disordered eating.
Will I lose weight on 75 Hard?
It may change your weight, but the programme is not a weight-loss plan and does not set a calorie target. One expert quoted by WebMD warns against expecting significant weight loss from this kind of challenge.
What is a good alternative to 75 Hard?
75 Soft and 75 Medium are the most common ones. Experts quoted by CNN suggest adaptable versions that allow rest days and flexible hydration.
Sources
- CNN via ABC17: should you try the 75 Hard challenge? Experts warn the risks may outweigh the benefits Read via a page-to-text summary. Quotes a research dietitian at Northwestern Medicine, a strength and conditioning specialist, a Wharton habit researcher and a runner who finished twice.
- Cleveland Clinic: the 75 Hard challenge and its rules Read via a page-to-text summary. Notes little to no scientific evidence for the programme and lists who should be cautious.
- Garage Gym Reviews: what is the 75 Hard challenge Read via a page-to-text summary. Lists risks and a registered dietitian's caution on eating-disorder history.
- CDC: physical activity guidelines for adults Read via a page-to-text summary. 150 minutes of moderate activity or 75 of vigorous, plus two days of muscle-strengthening.
- NHS: water, drinks and nutrition Read via a page-to-text summary. 6 to 8 cups of fluid a day, more if active, hot or ill.
- WebMD: what is the 75 Soft challenge Read via a page-to-text summary. Quotes a sports medicine physician and a Cleveland Clinic psychologist comparing Soft with Hard.
Made by EASYTECH, who also make Ninety.
