If you are a high school student, it should be better in your middle school. If you haven't conducted systematic long-distance running training before, you may pass the second-class athlete standard after training for about one year. Work hard, pay attention to gradual and persistent training, and master scientific training methods, and your grades will improve quickly.
Extended data:
Warm-up steps:
A. Hands akimbo and toes alternately move both ankles.
B. Kneel down, lift your heels, and practice repeatedly for 3 to 5 times to make your knees move.
C. alternately raise and abduct the lower limbs and move the hip joint.
D. leg press front and back, lunge left and right, and stretch leg muscles and ligaments.
References:
Baidu encyclopedia-long-distance running