The 75 Hard Guide: Rules, plan, and how to log every requirement in Zenstart

Use this practical guide if you are starting the 75-day challenge and want a clean system for consistency, no excuses, and honest check-ins.

Length

75 days

Workouts per day

2 x 45 minutes

Daily log requirements

5+ checkpoints

Typical reset trigger

Any rule miss

What is 75 Hard?

75 Hard is a 75-day consistency system: every day must match every requirement, and missing one requirement fails the streak. There are no off-days, substitutions, or partial passes.

It is not a workout app, a weight-loss app, or a nutrition recipe guide by itself. It is a behavior protocol. If your logging is inconsistent, your implementation becomes inconsistent.

The core 75 Hard rules

Build your workflow around these rules first, then build your training plan second.

Finish both workouts every day

Two workouts, every day, one of them must be done outdoors (or outside your gym/home facility if weather blocks you).
Each session should be at least 45 minutes and completed within that day.
Skipped days are not accepted.

Track a fixed nutrition plan

Choose a specific nutrition plan and follow it exactly every day.
No food swaps that are not in your plan.
Many participants include no-calorie sweeteners and strict liquid rules for consistency.

Drink one gallon of water daily

Track water intake each day with a specific goal (typically 128 oz / 3.8 L).
You can choose a metric conversion that works for your location.
If you miss the target for a day, that day fails the challenge.

Take progress photos every day

Take one photo in the morning before work and one at the end of the day.
Keep lighting and framing consistent for reliable progress comparison.
Missed photo = missed requirement for that day.

Read 10 pages of nonfiction

Complete 10 pages each day; many people do this at work intervals to stay consistent.
Track only nonfiction reading as defined by the program.
Audio books can be used by some versions, but set your rule consistently before day 1.

How to run 75 Hard from day 1

This is the fastest loop that works with zero guesswork.

Execution flow

1
Pick a start date and commit to 75 consecutive days with zero missed requirements.
2
Set your habit trackers in Zenstart before Day 1; do one setup pass and don’t change the list mid-program.
3
Log each habit at end of day: workout duration, water, photos, reading pages, and diet adherence.
4
Take your photo, then immediately mark it done so you can start wind-down and avoid end-of-day drift.
5
At the end of each week, review completion rate and remove friction points before day 20+.

How to set it up in Zenstart

Use one habit card per rule and keep each habit name short enough for quick daily check-ins.

Workout 1 (Outdoors, 45 min)

Boolean + duration habit; mark when you complete a 45-minute session outside.

Workout 2 (Any location, 45 min)

Boolean + duration habit; complete a second training block even if short split workouts are needed.

Water Intake

Numeric habit target 128 oz (or converted local equivalent) and log in ounces or ml.

Progress Photos

Boolean habit for 2 photos daily and optional note for missed framing consistency.

Nonfiction Reading

Numeric habit target 10 pages; log pages read and title for context if useful.

Diet on Plan

Boolean habit to confirm every day you stayed with your exact plan.

Most common ways people fail this challenge

If you prevent one of these, your consistency score rises fast.

Overbuilding your routine

Keep only required habits. If a habit isn’t part of the rules, remove it from this challenge workspace.

Only logging at night

Use reminders and log at least one workout and a minimum amount of water before noon.

Shifting targets mid-challenge

Set your targets once, then do not alter rules to pass tough days.

Forgetting photos/reading due to workload

Attach both to non-negotiable time blocks: post-lunch and before bed.

FAQ

Short answers for the most common questions before you begin.

Do skipped days reset the challenge?

Under the standard 75 Hard rules, missing any required daily task resets the count and you start over from the current day.

Can I replace a 45-minute workout with one short and one long workout?

Yes, as long as the two sessions are still completed, 45 minutes each, and one is done outdoors.

Can I still do this in an iPhone app?

Yes. Zenstart is built to make this logging-heavy routine easier: custom habit cadence, consistent check-ins, and trend visibility across 75 days.

Should I train differently during 75 Hard?

The program’s goal is consistency, not advanced programming. Keep exercises repeatable and recoverable to avoid burnout.

Meditate

10 minutes before coffee.

Deep Work

Phone down, timer on.

Hydrate

Track daily glasses.

Meditate

10 minutes before coffee.

Deep Work

Phone down, timer on.

Hydrate

Track daily glasses.

Meditate

10 minutes before coffee.

Deep Work

Phone down, timer on.

Hydrate

Track daily glasses.

Journal

One sentence each night.

Stretch

Five-minute mobility reset.

Sleep

Lights out before 11pm.

Journal

One sentence each night.

Stretch

Five-minute mobility reset.

Sleep

Lights out before 11pm.

Journal

One sentence each night.

Stretch

Five-minute mobility reset.

Sleep

Lights out before 11pm.

Build good habits, break bad ones.

Logging helps you be consistent so you can improve one day at a time.

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