You should eat carbohydrates after doing bench presses. How to exercise without eating? Strength training is not only practice, but also eating is very important. This is a fact. I didn't understand when I first went, and I didn't eat after practice. Later, after practice, I felt that my body could bear the load. You must be the one who only practices and doesn't eat. I didn't know your coach asked you to do several groups at a time. Recovery depends on your nutrition, mood and sleep. If you really think it's no good, drink Red Bull. I have had the same time as you, when I have no money. I went to the gym again, and I couldn't stand it. I drank a glass of red bull half an hour ago and the effect was remarkable. Your muscle tissue is absolutely fine. The point is that you can't bear this amount. After a long time, your muscles get used to it.