In fact, you don't need to do any stretching in the morning run. You should start running slowly, which is naturally a warm-up exercise. Don't run too fast at first. As for stretching after morning running, there are two main aspects. One is to prevent muscle soreness caused by lactic acid accumulation. Another is that if you don't stretch, the leg shape will be ugly, because the muscles will die together if they don't pull apart.
Stretching 1: find a place with a little ridge, you can step on it with your toes, then your heels will leave the ground and your toes will exert force. This action is mainly about your achilles tendon.
Stretch 2: find a place to hold it, then lean back with one leg, then hold it near the hip with one hand, and exchange your legs.
Stretch 3: Side pressing