[Swimming] Preparation for warm-up before swimming

Breathing preparation
Prime Minister, with both arms on both sides of the body standing upright. Then, take a deep breath and slowly Stretch your arms out and up,
Until the two hands touch on the head, then slowly restore, and slowly breath. Repeat 10 times, every breath
Are trying to breathe deeper.
The body is upright, with two-handed clasp placed on the back side of the head. Take a deep breath and hold your breath for 5 seconds. Then, call out the gas as quickly and thoroughly as possible. Every time we repeat five times, we need to emphasize the speed. After all the gas is called out, we immediately breathe in our breath.

Stretching
The two hands are separated and placed on both sides of the body. The body is upright. With the heel rolling up, slowly raise your arms as high as possible. Then, put your heel down and slowly put down your arms to stretch them on both sides, about the same height as your shoulders.
Then slowly turn to the left. First, face the front, and then turn left as much as possible. Next, the body faces the front again, bend forward, and touch your toes with your fingers. At last, the body resumes the upright posture and repeats the action just now, twisting to the right.