Introduction to sports:
Exercise, a kind of physical activity that can promote health, is a set of rules involving physical strength and skills, and is also a behavioral activity constrained by habits, which is usually competitive. During strenuous exercise, people's heart beats faster, muscles and capillaries dilate, and blood flows faster. At the same time, the rhythmic contraction of muscles will squeeze the venules, prompting blood to flow back to the heart quickly.
At this time, if you stop to rest immediately, the rhythmic contraction of muscles will also stop. A large amount of blood that originally flowed into the muscle can't flow back to the heart through muscle contraction, resulting in a drop in blood pressure and temporary ischemia of the brain, which may lead to palpitation, shortness of breath, dizziness, pallor and even shock and fainting.
Examples of sports:
1, life lies in exercise, health lies in exercise, dancing activates body and mind, and running enhances physical fitness.
2. Ride a bike and have an autumn outing, which is pleasant; Dancing, charming and full of energy; Climb famous mountains, enjoy the scenery and exercise your bones and muscles; Doing exercise keeps you young and healthy.
3. Climb the mountain of happiness and make life full of joy; Take happy steps to make life full of vitality; Walking in the spiritual square always relaxes the mind.
Life lies in exercise, and life lies in rest. Stay optimistic and follow the rules of life. Regular exercise during the day will make you healthy. Rest on time at night, and the spirit will be comfortable.
5, a person should start from breathing, never from the thought process itself. Only when you can feel the subtle movement of your breath can you feel the subtle movement of your mind.
6. Exercise and enjoy a healthy life; Outdoor sports, breathing fresh air; Life lies in exercise, and happiness comes from nature; Keep exercising every day, be in good spirits and smile every day.
7. I love sports because I like the feeling of being blown by the breeze. I love sports, because I like the feeling of getting wet by clear water. I love sports because I like the feeling of breaking through the breath.
8. Life lies in contradiction and movement. Once the contradiction is eliminated and the movement stops, life is over.
9. If the machine doesn't turn and rust, people will get sick when they are inactive.
10. There is no friend like health, and there is no enemy like illness. Instead of crying for illness, it is better to add color to life through exercise and fitness.