I'm writing this while lying on an exercise mat, which should give you an idea.
  1. The bike.
  2. The weights.
  3. The elliptical.
  4. The treadmill.
  5. Hydrating.
  6. Sit-ups.
  7. Push-ups.
  8. Squats.
  9. Lunges.
  10. Whatever you do with the giant ball.
  11. Stretching.
  12. Exercising.