Winter Arc 90-Day Plan, Week by Week

How to lay out 90 days of Winter Arc: rules and a start date, three phases, a 13-week table, a weekly review and three ready rule sets.

Updated October 11, 2026

Setup: your rules and start date

A Winter Arc is 90 days of a few daily rules that you check off every evening. There is no official program, so you need your own plan. If you have just heard of the trend, start with what the Winter Arc is.

• Pick 3 to 6 rules. Each one must be a clear yes or no by bedtime: "train 45 minutes" works, "get fitter" does not. Three or four are plenty for a first arc. For ideas, see the 60 Winter Arc rule ideas.
• Set a minimum for each rule. Decide now what you will do on the worst day: 15 minutes instead of 45, two pages instead of ten. More on that below.
• Choose your start and end date. Most people start on October 1, which puts day 90 on December 29. Start on October 15 and a full 90 days ends on January 12. You can also shorten the arc to finish on December 31; just write the end date down before day 1. The Winter Arc start date calculator does the counting for you.

Three phases of about 30 days

Your rules stay the same for the whole arc. What changes is what you pay attention to in each phase.

Phase 1, weeks 1–4: rhythm

The goal of the first month is not results. It is the habit of doing your rules and checking them off every day. Keep it simple even if you feel you could do more, and find a fixed time in the day for each rule.

Phase 2, weeks 5–8: build

Once the rules stop taking willpower, you can raise the bar a little: 10 to 15 more minutes, one more workout a week, or one new rule. Change one thing at a time so you know what worked and what did not.

Phase 3, weeks 9–13: hold and finish

December brings exams, deadlines, parties and holidays. Add nothing in this phase. The job is to reach day 90 with the rules you already have, using the minimum wherever you need it.

The plan, week by week

The table shows what to focus on each week. Days count from your own day 1, not from October 1.

Weekly review checklist

Pick a fixed time, such as Sunday evening, and go through five questions. It takes a couple of minutes.

• Did I check off my rules every evening? If not, set a daily reminder and keep the tracker where you can see it.
• Did I miss two days in a row? If yes, make the minimum smaller for the rule that broke.
• Is it always clear whether a rule is done? If you have to think about it, rewrite it with a number or a time.
• Did I sleep enough? If not, move your bedtime before you raise anything else.
• Which days next week will be hard? Decide now where the minimum will be enough.

Never miss twice

Almost everyone misses a day or two in 90 days. One missed day does not reset your arc or send you back to day 1. What matters is not missing two days in a row. One miss is an accident; two in a row is how arcs quietly end. So on the day after a miss, do at least the minimum of every rule.

The minimum version for bad days

Illness, a deadline, a long trip, a friend's birthday: these days will come. The minimum is a smaller version of each rule that still counts as done. Some examples:

• Train 45 minutes: 15 minutes at home, or a walk.
• Read 10 pages: two pages before bed.
• 90-minute focus block: 25 minutes.
• 8,000 steps: get off the bus one stop early.
• Lights out by 11:30 pm: phone away at 11:30, even if you are not asleep yet.

How to finish your arc

Day 90 is for taking stock, not for a before-and-after photo. Count how many days you kept each rule, then sort your rules into two groups: the ones you want to keep in January, and the ones that were only for the arc. If you want to keep going, start a new arc with a short list and a new end date rather than stretching the old one forever. For ideas on what to run next, browse New Year challenge ideas: reading streaks, morning routines and Dry January all make a strong next arc.

Three ready rule sets

The button under each set opens the contract generator with those rules already filled in. Change them, add your own and sign.

Beginner: 4 rules

1. Walk 8,000 steps
2. Read 10 pages
3. No phone for the first 30 minutes
4. Lights out by 11:30 pm

Use these rules

For a first arc. Each rule takes under an hour, and together they cover movement, your mind, your mornings and your sleep.

Intermediate: 5 rules

1. Train 45 minutes, as planned
2. Protein at every meal
3. Drink 2 liters of water
4. No social media before noon
5. 7 hours in bed

Use these rules

For people who already train. Training, food, water and sleep support each other, and the social media rule frees up your mornings. For more on food, see the Winter Arc diet.

Study or work: 5 rules

1. Same wake time every day
2. 90-minute block, no notifications
3. No social media before lunch
4. Move for 30 minutes
5. Write tomorrow's top 3 tasks

Use these rules

For exams, a thesis or a big project at work. The fixed wake time and the social media limit protect one block of real work every day. There is more on studying in the Winter Arc for students, and the Winter Arc for women has a glow-up set.

Where to track it

Check off your rules every evening at the same time in the online tracker, which keeps your streak in your browser with no sign-up. If you prefer paper, print a 90-day Winter Arc tracker sheet with your own rules and dates and put it somewhere you will see it.

Sign your contract

Pick your rules, set your start and end date, and sign a one-page contract. It is free and takes a couple of minutes.

Write my 90-day contract