Q: I've been very busy and stressed at work recently, but I've gained weight. So I set aside two nights a week to do aerobic exercise, but a new problem has emerged, that is, I always can't sleep well after fitness. I'm worried that my good health and figure will leave me, but what's going on? A: The main reason for insomnia after exercise is that our nerves are still excited after exercise, which makes it difficult to fall asleep for a while. In particular, the exercise you take part in is a large amount of aerobic exercise, accompanied by strong music, which is more likely to cause sleep difficulties for people with nervous sensitivity. You can try changing the exercise time to morning or afternoon. If you can only exercise at night, you'd better choose yoga with the function of regulating parasympathetic nerves. When the work pressure is high, the body will make a state of preparation to resist the pressure, on the other hand, relax itself, such as constantly stuffing "snacks" into its mouth when it comes to pressure. If you have the habit of "eating" under pressure, prepare more foods rich in vitamin C such as lemons, tomatoes and cucumbers as "snacks", because experiments have proved that people will consume 8 times more vitamins than usual under pressure, so eating more of these snacks can satisfy their appetite without worrying about getting fat.