Drink plenty of water, avoid foods with lots of sugar and avoid pasta as is makes you tired. Also, instead of eating 3 big meals per day, eat small meals/snacks

Drink plenty of water, avoid foods with lots of sugar and avoid pasta as is makes you tired. Also, instead of eating 3 big meals per day, eat small meals/snacks often, it will keep your energy going. Don't forget to exercise and of course to get some sleep! That what works best for me.