TIGHTEN YOUR BELLY IN 1 MONTH WITH THE PLANK CHALLENGE
Do you have problems with your belly shape? Are you still dreaming about having 6 packs abs? We have a solution for you. We bet that you have heard of the plank, haven’t you? We also assume that you underestimate the effectiveness of this exercise.
Hold the plank for at least 30 seconds. You can increase it to 60 when it gets easy to hold the position.
Add another 30 seconds to the time that you used to hold it.
Guess what? Another minute to add!