Pilates pro Simone de la Rue demonstrates how to do a plank jack—aka the ultimate cardio and core-strengthening move—with proper form. A little known fact about planks: In addition to working nearly ...

Doing burpees can help you increase strength and fitness. But exercises such as kettlebell swings, plank jacks, and bear crawls provide similar benefits with a much lower impact on your body. When you ...

Dr. Shields is a physical therapist with a background in English Literature and a passion for healthcare and education. She hopes to combine her clinical expertise with her love of writing, establish ...