Today, my father and I got up at 6 o'clock to run. We have been running for 13 days. I remember when I ran for the first time, although I also ran for three laps, I felt out of breath after running, and I almost suffocated. At that time, the speed of running was first fast and then slow.
Now, I've been running three laps at a slightly faster speed and I don't feel so tired. My dad also said that if you keep exercising and stay up late, you won't feel very tired, and you can also increase your vital capacity. I must keep on exercising!