Flair Fitness Studio in Darien.Martha Guttuso explains, and Dina Fay demonstrates three levels of plank exercises in this video taken at
Plank exercises strengthen your abdominal muscles as you keep them tense and hold your body straight during the exercise, explained Guttuso, like Fay, a personal trainer at Flair.
When you're comfortable with a plank exercise, Guttuso said, it's time to take it up to the next level.
Here's a previous fitness video featuring Guttuso and Fay on Darien Patch, done in the same studio at Goodwives Shopping Center, 25 Old Kings Hwy. N.