How to run 400 meters and 800 meters

Everyone should try to take big strides and keep a constant speed. 400 to the last 100 meters is a sprint. Follow a good team in the early stage of 800, and you may be tired later. It doesn't matter, everyone is very tired. The last 200- 100 meters is just a struggle, and there is no strength to sprint at all. The 800-meter international competition was very painful in the end. Who can bite the bullet and stick to it is the best.