问:我的身体一直很好,虽然有点儿胖,但由于经常参加体育锻炼,自我感觉良好。可进入高中以后,学习紧张,晚上就喝咖啡提神;想使自己漂亮一点儿,就多吃水果少吃饭;碰到不高兴的事,就和几个好朋友去唱卡拉OK,还边吃边唱真是开心!可我想知道,这样做是否有利于我的身体健康?答:我们知 Q: My body has been good, although a bit fat, but because I often participate in physical exercise, feel good about myself. After entering high school, studying nervous, drink coffee at night refreshing; want to make myself a little beautiful, eat more fruits and less food; met unhappy things, and a few good friends to sing karaoke, but also eating Sing really happy! But I want to know if this is conducive to my health? A: We know