An Expert Says This Is the Number 1 Way to Work Your Core
Don't waste your time just doing crunches that only work one part of your belly. If you want to look down and see a six-pack, you need to do exercises that challenge your entire core. Kristina Marcussen, a neuromuscular physical therapist who specializes in working with athletes of all ages, has an …
Monique Edwards flipped this story into Health And Fitness•2550d