"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." BUILDING MUSCLE REQUIRES adding resistance training into your workout routine. You might wonder if that ...

Here are a few exercises to add to your next swim workout. Hold your kickboard vertically in the water, so that the flat part is facing you. Kick. Hard. Do that for one to two lengths of the pool.

Fitness experts say strengthening the core after 50 should focus less on six-pack abs and more on stability, posture, and pain-free movement.