Free challenges

Small habits. Big impact.

Pick one challenge, decide when and where you will do it, and tick it off every day. It is not about perfection – one missed day is fine, just never miss two in a row.

  1. 1Pick one challenge
  2. 2Set an if–then plan
  3. 3One tap a day

Pick a challenge

We recommend starting with one. More than two at once lowers your chances of sticking with it.

Morning light

10 minutes of daylight within an hour of waking. Sets your inner clock and improves daytime energy and night-time sleep.

21 days

7,000 steps a day

According to reviews, at 7,000 steps a day the risk of early death is clearly lower than at 2,000.

30 days

Same wake-up time

Get up at the same time ± 30 minutes every day – weekends too. Sleep regularity matters as much as sleep length.

21 days

No screens before bed

The last hour before bed without phone, tablet or computer. You will fall asleep faster and sleep deeper.

21 days

Cold shower

30–60 seconds of cold water at the end of your shower. Wakes you up, lifts your mood and teaches you to handle discomfort.

21 days

Last coffee by 2 pm

Caffeine has a half-life of about 5 hours. Coffee after lunch still worsens deep sleep in the evening, even if you fall asleep.

21 days

Eating in a 10-hour window

All meals within 10 hours, e.g. 8 am – 6 pm. Outside the window only water, tea, black coffee.

21 days

Protein in every meal

25–30 g of protein in every main meal (a palm of meat, fish, eggs, quark or legumes). They fill you up and protect your muscles.

21 days

30 plants a week

Eat 30 different plant foods a week – vegetables, fruit, legumes, nuts, seeds, herbs, wholegrains.

30 days

5 minutes of slow breathing

Every day, 5 minutes of breathing at about 6 breaths a minute. Calms the nervous system and improves mood.

21 days

Strength every day

A short dose of strength every day: squats, push-ups, lunges or a plank. Even 5–10 minutes a day builds muscle and protects joints.

30 days

No added sugar

No sugary drinks, sweets or added sugar. Fruit is fine.

21 days

Reminders

We will remind you at the time you set.

Save progress

Why it works

An if–then plan (implementation intention) is one of the best-tested behaviour change techniques – reviews show it significantly increases the chance you will actually do the new habit.

According to research by Phillippa Lally at University College London, forming a habit takes 66 days on average, ranging from 18 to 254 days. Missing a single day did not disrupt the process.

That is why there is no “all or nothing” here: the minimum version counts, you can use a joker once a week and the streak only breaks after two missed days in a row.