The answer to this question is 3
your body parts are made of cells well every living thing is
Obesity is a disorder involving excessive body fat that increases the risk of health problems.
(Obesity often results from taking in more calories than are burned by exercise and normal daily activities.)
Fitness related technology are running machines like treadmill, bicycles, weight lifts and etc. These technologies can help with personal fitness because they help the human body keep in shape and possibly even get stronger.