A streak is when you complete at least one challenge every day for 5 days. On the 5th day you will get bonus YuCoin for completing your streak.

You can see what day of a streak you are on by looking at the streak counter in the top right of your YuLife app home screen.
​

If you have any questions or run into any issues, please reach out to us using your in-app chat, or at support@yulife.com :-)