Calisthenics are a form of exercise consisting of a variety of exercises, often rhythmical movements, generally without using weighted equipments. Calisthenics is intended to increase body strength and flexibility with movements such as bending, jumping, swinging, twisting or kicking from using the body weight for resistance. It is the art of using your own body weight. Calisthenics are usually conducted in concert with stretches. Calisthenics can benefit both muscular and cardiovascular fitness, in addition to improving psychomotor skills such as balance, agility and coordination. People use Calisthenics for warm-ups before physical activity, as a weight loss program to burn fat, to build inner strength, to gain endurance, to improve cardio vascular system and to improve overall well-being. I use Calisthenics for similar reasons like to gain strength inside and out, to have a physique model type definition in my triceps, biceps, chest and abs. Most of all I do it for a healthier lifestyle and to become a better person. Nothing wrong with exercising with weights, it's just that once you stop lifting weights to build muscle, you'll lose your muscle quicker than when you stop performing calisthenics. The Calisthenics muscles stay with you for a very long time because it was created from its own body. The reason Calisthenics muscles are loyal to its master's body.