Streako

Challenge

The 21-day no added sugar challenge

Three weeks, one simple question each night: did I skip added sugar today? A group makes the cravings easier to ride out.

  • 21 days
  • Done
  • Every day
  • Ranked by days

The rules

  1. 1

    Tick the day if you had no added sugar. Agree as a group on what counts, for example whether fruit and honey are allowed.

  2. 2

    Check in each evening once the day is done.

  3. 3

    Only days inside the challenge dates count towards the leaderboard.

  4. 4

    Most completed days wins. Ties share a place.

Why this challenge works

Added sugar hides in a lot of everyday food, so three weeks of paying attention is often more eye-opening than the result itself.

A yes-or-no habit keeps it simple. There is nothing to measure, only a daily decision.

This is a food-awareness challenge, not medical advice. If you have diabetes or another condition, or are pregnant, speak to a doctor or dietitian before changing your diet.

Week by week

  1. Week 1

    Clear the obvious sources: sweets, sugary drinks, desserts. Read labels on sauces and cereals.

  2. Week 2

    Prepare swaps for your trigger moments, like fruit after lunch or a tea in the afternoon.

  3. Week 3

    Plan social events ahead. Decide what you will order before you arrive.

Tips to win

  • Write the group's rules in the challenge description so there is no debate later.
  • Add a note on hard days. Seeing what triggered a craving helps next time.
  • 21 days is a start, not the time it takes to form a habit. Read our guide on how long habits really take.
  • If you slip, tick honestly and carry on tomorrow. One missed day does not undo the rest.
More on building the eat vegetables habit

Start it in Streako

  1. Open Streako, go to the Social tab and tap Create.
  2. Pick the "21-day no added sugar challenge" template. The habit (No added sugar: Yes / No, Done, every day) and the rules are filled in for you.
  3. Check the dates. It starts today and ends 21 days later; change the start if your group begins on another day.
  4. Create it, then share the invite code or show the QR code to your friends.
  5. Check in every day and watch the leaderboard.

FAQ

Questions about this challenge

Most versions allow whole fruit and focus on added sugar. Agree the rules with your group and write them in the description.

It is a manageable length for a first run. Habits usually take longer to become automatic, so many groups run a second round.

No. Only people who joined with your invite code or QR can see it.

More challenges

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How challenges work

Start the 21-day no added sugar challenge

Create it in a minute, share the code, and let the leaderboard do the motivating.

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Habits stick better with company. Send this to a friend, then start a challenge together.

streako.app/challenges/21-day-no-sugar-challenge

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