30 Day Ab Challenge - Best Ab Exercises to Lose Belly Fat Fast Banish your stomach fat with this 30 Day Ab Challenge. This 30 day ab workout challenge is designed to strengthen your core and tone your stomach. Give this ab challenge a try.
I'm on day 3 and am determined to complete the challenge! This 30 day wall sit workout challenge has been designed as a great way to tone up and strengthen your leg and core muscles, by doing a simple exercise once a day