People's understanding of fitness and exercise is often vague, and some people regard "big muscles" as synonymous with "fitness"; Some people think that exercise is fitness, equal to middle-aged people. In fact, fitness and exercise are two different concepts, which are both related and different.

(1) Physical exercise: refers to the physical exercise that ordinary healthy people engage in to enhance their physique. Mainly to develop and enhance the function of human internal organs. Especially cardiovascular system and respiratory function, as well as strength and endurance. That is, exercise based on aerobic metabolism. However, due to the different age, gender and health status of the participants, the content used is also different. For example, jogging in the morning and old people playing Tai Ji Chuan.

(2) Fitness: (BODY-BUILDING) is a physical activity that uses heavy or special equipment such as bare hands, dumbbells, barbells and kettles to exercise, increase physical strength, develop muscles, improve body shape and cultivate sentiment. It is a branch of weightlifting and an independent competition. Because its competition is health, strength and beauty, it is called bodybuilding competition.

(3) Physical exercise: through various forms of physical exercise, improve the functional level of internal organs, especially the cardiovascular system, and finally achieve the purpose of enhancing physical fitness. Generally, aerobic training is combined with equipment training, and the amount of exercise in aerobic training is generally not less than equipment training. Instrument training is mainly based on "light weight, multi-group, short interval" moderate intensity training. "Light weight": 20%-30% of the maximum weight is generally used, with a maximum of 40%. "Multi-group number" is generally not less than 3 groups, and each part is not more than 5 groups. "Multiple times": at least 15 times in each group. "Short interval": generally 30-40 seconds, no more than 60 seconds.

(d) Fitness training: It focuses on developing muscle blocks and shaping muscle lines. Mainly anaerobic training, supplemented by appropriate aerobic training. Anaerobic (instrument) training adopts high-intensity training of "big weight, few groups, few times and appropriate intervals". It has two meanings:

(1) Fitness. The purpose is to cultivate a well-proportioned and beautiful figure and improve the health level.

⑵ Competitive bodybuilding. Through scientific training, reasonable nutrition and full recovery, the muscles of all parts of the body can be developed to the maximum extent, so that the body can become fit and sculptural and win the competition.

Second, the relationship between the two:

From two concepts, physical education belongs to low-level and popularization, while fitness belongs to high-level, improvement and specialization. Physical education is the foundation, and the development of fitness promotes physical education. The purpose of both is to enhance people's physique, one focuses on a healthy body, and the other focuses on a bodybuilding figure. Therefore, both men and women, old and young, should take proper exercise at the same time as physical exercise to make our bodies healthy and fit.

You don't have to go to the gym to exercise. In fact, as long as you have a sense of fitness, you can exercise anytime and anywhere in your daily life, such as watering flowers, lifting books, abdomen, climbing stairs and mopping the floor.