Upper Body and Core Metabolism-Boosting Exercises
To do a regular push-up, start in plank position. Get on your hands and knees with your hands directly under your shoulders, fingers facing forward. Extend one leg and then the other behind you so that your feet are together, toes tucked, heels reaching way back. Your head and spine should be aligned. Engage your core throughout the exercise to protect your lower back.
Holding in plank pose can help define your abdominal muscles and prevent back injury. For an easier pose, come down to your forearms. For a more difficult plank pose, lift one leg up at a time and hold for 10 seconds before switching legs.