Swimming keeps you healthy and by doing this, oxygen is circulated throughout the body by your heart and blood vessels that keeps your muscles working during exercise.
This stretch stretches your hamstring and your limberness in your legs.
The picture shows the amount of body fat in a human's body. It defines our leanness and our weight.
The guy is lifting weights and by doing this he is using his arm muscles to successfully lift the weights.
By doing these crunches or sit-ups over a length of time it shows the ability of a muscle group and how it continues movement over time.
A person is running fast which shows speed
The guys are changing their bodies quickly to move.
She is maintaining an upright position without falling.
She is using her hands and feet at the same time.
The runners start when they hear the gun go off and they go.
She needs power to get a good strong start and to run fast.