by Karen Collins, MS, RDN, CDN, FAND
Q: I keep hearing about “planks” as an exercise for waist and abs. What’s a plank?
A: Planks are a great muscle strengthening exercise. They’ve become popular because they need no special equipment and strengthen abdominal muscles – along with others – without the back strain that sit-ups can cause.
The basic plank starts in a position like the “up” position of a push-up, except rather than moving up and down, plank exercises strengthen muscles by holding a position. You can start with the form where you rest on forearms and knees, instead of hands and toes. There are a variety of plank exercises, each targeting a slightly different part of the “core.”