HOW: Place your forearms on the ground with your elbows straight under your shoulders, your knees straight down from your hips. Push into the ground with your toes and lift your knees off of the ground. From this position, keep your knee bent as you move your leg out in a diagonal direction. Bring it back to the starting position and repeat.
FEEL: You should feel you glute muscles working on the leg that is lifting. You will also feel your quadriceps muscles working on the knee that is holding you up. You should also feel your core working the entire time.
COMPENSATION: Don’t bring your leg straight out the side or straight back, make sure it’s a diagonal direction. Don’t twist your back as you bring your leg out.