Anyone have a good 21 DAY CHALLENGE to share (food/exercise)?

Rannoch3908

Trying to give myself a little boost besides the normal day to day stuff I already do and do some sort of challenge to speed up results a little. Just looking for a fun 21 DAY CHALLENGE that involves healthy food ideas and exercise (maybe a plank or ___ challenge).

Figured someone might have a cool one they liked.
(I am also scouring google).

usmcmp

Someone in here probably started a good one: http://community.myfitnesspal.com/en/categories/challenges

purpleannex

We'd need to know what you do already, to know what you'd find a challenge. How about running 10 miles every day?