Reading into writing
Many teenagers spend alot of their free time staying at home. They enjoy using the Internet, talking on the phone, watching TV or sleeping. Other teenagers prefer doing sports, usually outside. Some teenagers listen to music or do other activities such as gardening.
Talking on the phone or spending hours in front os a screen does not help teenagers too meet real friends. It is a good idea for teenagers to do sports or to choose activities that give them the opportunity to go out. So I suggest walking or riding a bike because in this way they exercise and socialise at the same time.