help!!!!speaking speech!

1.Students have a lot pressure on their study nowadays. Therefore, they should do more exercise and be relaxed.
2. Many teenagers have some serious diseases such as obesity, heart disease and high-blood pressure. It is because they do not do any exercise. They like playing computer games and sit on the chair for a long time.
3. Having the P.E lessons is very important for students. It is because doing sports can train their ability of organization and cooperation.

Points for u:
-hk people not enough sport
-more sport more healthy no sick leave participate in all lessons learn more.