Teenagers should take ample physical exercise on a regular basis. However, you have to convince your child in a tactful manner to take his exercise. You have to make them understand that taking physical exercise is very important for them to be big and strong. As teenagers, they may not want to go for jogs or biking as they might find it boring.
You could encourage them to go for walks with their friends. You should be alert to know if there is the faintest interest visible in your teenager child on things that can be beneficial for their health like ice skating, skateboarding, dancing, gymnastics, basketball, swimming, skiing or football. You can encourage him to participate in fun runs. You have to set up an example and so it is important that you take your regular exercise as well. Encourage him to be like his role model sports star and he will automatically work hard.