5-Minute No Rest Workout for Crazy, Flat Abs
If you have only 5 minutes to work out, this ab routine will get your flat abs you want. Just make sure you perform this routine from 3 to 6 times per day, whenever you’ve got 5 minutes free. There are 5 moves, each move is only 1 minute, but there’s no break in between. So you need to go hard if you want to reach your goal.