The 7-Minute Workout 12 exercises deploying only body weight, a chair and a wall, it fulfills the latest mandates for high-intensity effort — all of it based on science. 1. Jumping jacks 2. Wall sit 3. Push-ups 4. Abdominal crunches 5. Step-up onto a chair 6. Squats 7. Triceps dip on a chair 8. Plank 9. High knees, running in place 10. Alternating lunges 11. Push-ups with rotation 12. Side plank, each side