帮忙写一篇英语读后感,
A study（研究） done in the United States confirmed（证实） that people gain weight during the holiday season more than at other times of the year.
　　When faced with a threat（威胁）,our common responses（反映） are to fight,or take flight.However,when we are faced with an overwhelming variety（琳琅满目的）of food,our response seems to be to eat all we can.
　　Experts say that when people are faced with an all-you-can-eat buffet（自助餐）,they eat more because they think they are getting more for their money.They often forget they are paying the same amount whether they eat just what they need,or everything they want.
　　In fact,behavior（行为） like this puts people on the same level（水准） as laboratory（实验室） mice（老鼠）.When mice are faced with many different foods to choose from,they too cannot help but overeat（吃的过饱）.