You can even build muscle and also lose some weight (if that is your objective) inside the ease and comfort of your personal home. Brace your abs and lower your bum back and down (just as if sitting right into a chair) preserving the weight in the heels and sink https://econopass.com/health-and-fitness/fitness-zone/fitness-effective-workouts/10-effective-exercises-building-lifelong-core-strength-without-planks/