No, it's best to do math problems at night, with clear thinking and no interference, but not too late. Do math problems for two hours at most in the evening. Don't stay up until after twelve o'clock, you'll definitely be out of spirits the next day.

I started doing this just after the second day of junior high school. I try my best to do my homework at school and finish it before 8 o'clock when I get home. Then I do physics and math problems for two and a half hours, 10+30 reciting things, 1 1 falling asleep, and I start sorting out the wrong questions for half an hour at 5 o'clock the next morning and recite words for a while. In a month, I went from more than 50 people to the age of 10.