In this workout from Goldstein, you’ll swim 2,200 yards, or 1.25 miles. (Most health club pools are 25 yards long; an Olympic-size pool is about 55 yards.) The warm-up and cooldown improve aerobic ...

I have quite a strong set of core muscles thanks to regular Pilates and strength work. However, one exercise that I have always struggled with is flutter kicks. It’s a more advanced move, requiring a ...