Good for 4 first days – 30 Day - Plank Challenge Review

The check sign after a workout is twice the size of the square assigned to each day and after completing the 4th day you can’t choose the exercise for the 5th day because the check sign for the 3rd and 4th day will cover the whole line. Useless
Review by Mariusdoczi on 30 Day - Plank Challenge.