今天，我和爸爸6点钟就起床跑步，屈指一算，我们已经跑了13天了。我记得第一次跑步时，虽然也跑了三圈，但跑完后感觉上气不接下气，简直要窒息了。那时跑得速度是先快后慢。
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.
现在呢，我用稍快的速度持续跑了3圈，并且不感觉那么累了。我爸还说，坚持锻炼再熬夜就不感觉很累了，也能增加肺活量。我一定要坚持锻炼！
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!