1. Get enough sleep
1.1 Early to bed, early to rise makes a man healthy, wealthy and wise
1.2 Usually, it requires about 8-9 hours
1.3 9-10 hours for all children mostly teenagers and below that level
2. Eat healthy foods
2.1 Avoid junk foods
2.2 prefer eating fruits and green leafy vegetables every day
2.3 avoid too many processed foods altogether
3. Exercise
3.1 a brisk walk
3.2 a quick jog
3.3 martial arts
3.4 cardiovascular exercises
3.5 aerobics
3.6 dancing in your room
3.7 playing Wii Fit