This alone can go a long way toward helping you lose weight.
Following a list of bland diet foods can go a long way to help certain stomach and digestive conditions.
Exercise can go a long way toward improving your metabolism.
Even if your French is not very polished, making the effort to speak as much French as you can will go a long way in terms of the locals wanting to have contact with you.
A little travel insurance can go a long way when it comes to protecting you from these risks.