When buying groceries, choose fruits and vegetables over convenience foods high in sugar and fat. Always have healthy snacks available. And never use food as a reward or punishment.

• 在买食品的时候,挑一些水果和蔬菜,而不是那些高糖分、高脂肪的方便食品。一定要准备一些健康的零食,据不用食物作为奖励或惩罚的手段。