Just use your own body to improve fitness

If you practice with equipment,like one does in a gym, then you will become especially good at this one move. If you train with your purely own body weight, for example, do one leg squats,or even squats on both legs, you will become strong and supple.

You improve balance and coordination and built up strength. It is therefore good to use what you always have available: just your own body. When you know how to do the right moves, you have your gym in the head.