You should/You shouldn't.

YOU SHOULD.

• learn another language or a musical instrument.
• eat well, especially brown rice, pasta, bread and fish.
• drink about eight glasses of water a day.
• change your routine, for example, use your computer mouse with a different hand.
• do regular exercise.
• sleep 8 hours.
• do puzzles.
• do scrable and board games.

YOU SHOULDN'T

• forget nreakfast. Eating breakfast helps concentration.
• drink a lot of caffeine.
• watch a lot of TV.