Question

What ONE should do to stay healthy (advice) and reasons.
Just a few sentances

Answer 1

Pour rester en bonne santé il faut manger équilibré, éviter les mauvaises graisses, penser aux fruits et aux légumes, boire de l'eau, ne pas fumer, ne pas boire d'alcool et faire du sport tous les jours.

Answer 2

One thing you should do to stay healthy is to drink plenty of water. Keep a cup or bottle of water with you at all times. Your brain cannot concentrate if its dehydrated.

Sorry, if you wanted this in French. I see that's what this question is under.