Calisthenics are a good inexpensive way to build muscle and increase definition of your muscles but they're (typically) a pretty boring way to workout and most people need to be pretty dedicated to accomplish anything with them. For a skinny guy most forms of physical excercise that are challenging enough will create noticeable improvements in your appearance, and it is (probably) better for you to choose a handful of activities you enjoy doing than to focus on a dedicated regime and to change your lifestyle.







