Especially 1500, what should I do? How to match the clothes for 250 meters on the runway? It should be very cold then.

The pain on the right side of the stomach is a fork in the air. Before doing strenuous exercise, you should be fully prepared (warm-up), otherwise the heart and lung organs will suddenly enter a state of strenuous exercise from a static state, resulting in various uncomfortable reactions.

A more suitable sportswear will do. Of course, if you are fully prepared for activities, you can wear a T-shirt and tights. In the last game, just wear a coat and pants to keep warm outside. Wear light jogging shoes (don't wear spikes, sneakers, basketball shoes, long-distance running is too heavy).

1500m, it is best to follow the running tactics. Bite the top three from the beginning, don't lead, just follow the top three. A 250-meter lap should be six laps, followed by four laps, the fifth lap to the top two, and the last lap to sprint. The opponent you're talking about, who doesn't understand tactical arrangements at all, will rush blindly and stay ahead (unless he's strong)