The fastest way to six pack abs is targeting excess body fat by working several muscle groups together. This speeds-up belly fat loss by raising metabolism and lowering calorie-storage.
When you're looking to give your core a little extra work at the gym (or in front of your favorite Netflix show), chances are, you've got a go-to repertoire of ab exercises. But while you probably think you've got 'em nailed after all this time, there are still some form mistakes you might be making.