The amount of physical activities that teens engage into have gone down over the years, this leads to a slower metabolic processes. This slowing down is the main cause of obesity, when teens are not involved in physical activities they can rapidly gain weight. Being overweight especially at an early age can be very harmful it can cause diseases like cardio diseases; it also increases the likelihood of diabetes and arthritis. Hence it is very important to engage in physical activities, if your body is fit then the body will also be able to function smoothly. Working out and staying fit gives you strength, it also makes your body more flexible. People who are physically fit and are involved in physical activities are more likely to be mentally healthy.