Eating too little or the wrong kind of food before exercise can lead to glycogen depletion. But some foods containing amino acids can help the body produce these hormones. For example, L- tyrosine is an unnecessary amino acid and plays an important role in the production of neurotransmitters dopamine and adrenaline. Some athletes or bodybuilders who receive intensive training may benefit from supplementing L- tyrosine, because it can help relieve fatigue and tension and help cope with heavy exercise.

Bread is the first choice of complementary food before fitness, like sliced bread. It is necessary to supplement carbohydrates before exercise, and flour itself is a good carbohydrate supplement. At the same time, bread is easy to carry and eat. Oats are also a good substitute if you don't want to eat bread. There are small packages of oats on the market, which are convenient to carry; Oats are also very convenient to eat, and can be eaten with boiled water or warm water.

Eating only bread and oats is not enough if it is not for reducing fat. If you want to gain muscle, I suggest you drink another bag of milk to increase your energy intake. In addition, it is strongly recommended that you eat a banana before fitness. Banana is one of the foods that can be absorbed quickly, which can increase the blood sugar concentration and ensure the energy supply for fitness. Of course, people with cold bananas and bad stomachs need to use them according to their own conditions.