Firstly you should eat the healthy food like : Vegetables, fruits and a little meat, beef is better and more energy than other ones. Secondly, you should do the exercise, practising it 2 or 3 time per week if you don't have much time, if yes, the better is doing it everyday, and drinking a … Read more
Balanced diet
Good exercise
What everyone else says and what you learned at school?
:) Hope this helps
Also try swimming to keep fit swimming exercises a lot of your muscles at once so it is an ideal exercise method