What Is the 75 Hard Challenge?
75 Hard is a 75-day mental toughness program created by Andy Frisella. Every single day, with zero substitutions, you complete five tasks: two 45-minute workouts (one must be outdoors), drink one gallon of water, follow a diet of your choice with no cheat meals and no alcohol, read 10 pages of a non-fiction or personal development book, and take a daily progress photo. Miss any task, even once, and you start over at Day 1.
How the Finish Date Is Calculated
The math is simple but unforgiving. Day 1 is your start date, and the challenge runs 75 consecutive calendar days, so the finish lands 74 days after you begin. This tracker counts the days elapsed since your start and adds one so the morning you begin is Day 1, not Day 0.
finishDate = startDate + 74 days; dayNumber = floor((today - startDate) / 1 day) + 1The Numbers Behind 75 Days
Over a full run you log 150 workouts at 45 minutes each, which is 112.5 hours of training. You also read 750 pages, roughly two to three full books, and drink about 75 gallons of water. Seeing those totals climb in real time is part of why a day-by-day tracker keeps people honest. There are no rest days and no partial credit, which is exactly what makes finishing 75 Hard a genuine accomplishment.
Frequently Asked Questions
What happens if I miss a task on day 40?
Do both workouts really have to be separate?
Does the gallon of water include coffee or other drinks?
Can I do 75 Hard if I travel or get sick?
Common Tip Percentages
| Service | Typical Tip Range | Notes |
|---|---|---|
| Restaurant (sit-down) | 15–20% | 20%+ for exceptional service |
| Food delivery | 10–20% | Consider extra for long distances |
| Taxi / rideshare | 10–20% | More for assistance with luggage |
| Hotel housekeeping | $2–5/night | Leave daily, not just at checkout |
| Barber / hair salon | 15–20% | On pre-discount total |
| Pizza delivery | 10–15% or $3–5 minimum | Higher in bad weather |
General Household Budget Ratios (50/30/20 Rule)
| Category | % of Net Income | Examples |
|---|---|---|
| Needs | 50% | Rent, groceries, utilities, insurance |
| Wants | 30% | Dining out, entertainment, hobbies |
| Savings / Debt | 20% | Emergency fund, retirement, extra payments |
Common Measurement Conversions for Everyday Use
| Quantity | US / Imperial | Metric Equivalent |
|---|---|---|
| 1 cup | 8 fl oz | 237 mL |
| 1 pint | 16 fl oz | 473 mL |
| 1 quart | 32 fl oz | 946 mL |
| 1 gallon | 128 fl oz | 3.785 L |
| 1 lb | 16 oz | 453.6 g |
| 1 ft | 12 in | 30.48 cm |