If you continually diet you are putting your body in a quasi-famine situation. It slows your metabolism down and breaks the thermostat. Diets don't work. They don't help you understand why you're eating more than your body wanted in the first place.
In some ways England is more liberal than France but I also find it more intrusive. But when you go abroad you have to accept the ways of where you live. I have to respect that.
