With calisthenics you can work out anywhere, anytime. You don't need a gym or any weights. You'll never be fat doing calisthenics because it's impossible. A fat person can't do calisthenics and someone who can do calisthenics can't be fat.
Here is a preview of what you'll learn about calisthenics...
¿ Getting cozy with calisthenics
¿ Getting started
¿ Beginners' calisthenics
¿ Following up with a healthy diet and lifestyle
¿ Much, much more!
Calisthenics exercises are unrestricted physical body trainings carried out at specific rates with minimal fitness equipment like a hand-held tool aimed at achieving strength, stability and fitness of the body.