We’ve told you how to do planks, and why to do planks, and what to do instead of planks when you get bored of planks. But there’s a critical thing about planks we forgot to tell you: You don’t have to hold the position until you collapse.
When you were a kid, you probably did sit-ups at school for an ab workout. But is the sit-up the best ab exercise? That’s actually a simple question. No way! There are far better ab exercises than a simple sit-up, which can exacerbate back problems and only focuses on one…