A yoga teacher says you can fire up your deepest core muscles using this one essential exercise

Unlike your abs, the deep core muscles sit deep within your torso and work hard to create stability and reduce your injury risk. If you’re unfamiliar with the muscles that comprise your core, learning the differences between your abs versus core muscles will help you increase core strength and stability where you need it most.

Yoga teacher Issy is a powerhouse when it comes to mobility, flexibility and functional strength. She teaches a simple, beginner-friendly move you can do before any workout to…