As a triathlete, she spends about five hours a day running, swimming, and biking. Here's the workout that keeps her core as strong as her heart. She explains, "In triathlon, every discipline ...

Raynetta Samuels, PT, is a physical therapist specializing in women's health. A resistance band ab workout is a great way to tone and stabilize your core, providing additional benefits to your health.

If you’re a keen triathlete, you will already know ... to legs and back when they meet at the mid-point. This workout is perfect for abs, but try not to perform it with stress and rigidity ...