Exercise is a Chinese vocabulary, pronounced duàn liàn, which is defined as physical activity that uses planned, structured and repeated physical activities to improve the health of one or more body parts. Make the body strong through exercise, cultivate courage, wit, safeguard collective interests and other virtues.
The basic explanation originally meant to strike and forge swords, and extended to improve consciousness and work ability through productive labor, social struggle and work practice. Wang Hanchong's On Balance and Temperament: "Iron and stone are natural, while learners are easy to be natural. What's more, people have the nature of the five permanent members, and sages are not familiar with them, so they are not good at suffering? "
Tang Guozhen's Gu Jian: "After a few years of hard work, you can cast a sword named Longquan." Lu Xun's "New Story Casting Sword": "I took iron home and practiced day and night. It took three years to forge two swords. "
Time not suitable for exercise
After meals: At this time, more blood flows to the gastrointestinal department to help digestion and absorption of food. At this time, exercise will hinder the digestion of food, and over time, it will lead to diseases of the gastrointestinal system and affect health. Therefore, it is best to sit still or lie down for 30 ~ 45 minutes after meals and exercise.
After drinking: alcohol is absorbed into the blood and enters the brain, heart, liver and other organs. At this time, exercise will increase the burden on these organs. Compared with after-dinner exercise, drinking exercise has a greater negative impact on the human body.