30 DAY PLANK CHALLENGE
For this month's challenge group, I'm basing it on the 21 Day Fix workouts and meal plans and adding some fun to it. This 30 day plank challenge is a perfect addition to this month's challenge to tone up and boost our core muscles to the max.
The plank challenge from 30dayfitnesschallenges.com is their most popular 30 day fitness challenge. It's been taken by over 100,000 people over the past 12 months, so why not add it to our group?!
