1. Master the plank. Get in the “up” push-up position, with your forearms on the floor instead of your hands. Keep your back straight; hold as long as you can.
2. Do yoga. Most yoga poses work the core muscles in the center of your body to keep you balanced.
3. Add cardio.People with good conditioning have the lowest risk of back problems. “Cardiovascular exercise probably helps by providing nutrition to fatigued muscles,” says Ohio State’s Marras.