Rest Days – 30 Day Plank Fitness Challenges Workout Review

At day 18 I really like this app. Still, you will have to plan your own rest days (whatever you think best) as the app does not appear to have them pre programmed. I go three then one rest day but have seen 2 and 1 recommended in several articles.
Review by DVKAK on 30 Day Plank Fitness Challenges Workout.