What is fitness?

Fitness refers to all kinds of physical exercise and physical activity to enhance physical fitness, improve health, improve body shape and enhance athletic performance ‌. It includes various forms of aerobic exercise, strength training, flexibility training, and is designed to promote physical and mental health ‌

‌ The basic principles and techniques of fitness

1. ‌ Warm up ‌ : dynamic stretching (such as high leg lifts, jumping jacks)for 5-10 minutes to raise heart rate, activate muscles and reduce the riskof strain ‌.

2. ‌ post-workout muscle soreness ‌ :Delayed onset soreness (DOMS) is a form of muscle microinjury that causescaution against overtraining for more than 72 hours ‌.

3. exercise on an empty stomach ‌ :Eat a piece of bread before morning exercise to avoid hypoglycemiadizziness and maintain basic metabolism ‌

4. sedentary people get up and stretch every hour ‌ : relieve lower back pressure.

5. ‌ Balance practice while brushing: standing on one leg to brushteeth (about 30 seconds each), unconsciously strengthen the core muscle ‌

6. climbing stairs‌:climb 10 minutes to the floor, can consume 75 calories,enhance heart and lung function ‌.