The stronger the cardio-pulmonary fitness, the easier it will be to study, work, walk, run, jump and work, and be competent for intense work, but gradually adapt to more intense sports.
Muscle strength is the strength that muscles can bear weight. Strong muscles can make the body more stable and avoid injury. In addition, people with big muscles consume more energy and lose weight faster.
Every day's daily activities, such as lifting heavy objects and carrying schoolbags, require muscle strength, which is also the key to supporting bones and affecting posture. If muscle strength is insufficient, it is easy to bend over, strain muscles and sprain joints.
Muscle endurance is the endurance of muscle strength. It is the number of repetitions when the muscle bears the appropriate load. The key points of muscle endurance are longer duration and more repetitions.
Just like climbing a mountain, some people walk for two or three hours without feeling tired, while others walk for half an hour. Muscle is closely related to muscle endurance. Usually, to train muscle strength, we should start with muscle endurance and gradually increase muscle endurance, and muscle strength will gradually get better.
Flexibility refers to the ability to expand the range of action when doing an action with force. Good flexibility can improve the level of physical activity, maintain the correct posture, reduce the damage of motor organs and improve the action effect.
Can your hands touch your toes when your knees are straight? This is the most commonly used method to test flexibility. People with poor softness are prone to injury if they move too hard.
For example, white-collar workers keep the same posture for a long time because of sedentary work. If they do strenuous exercise on weekends and holidays, they will easily bend over and sprain their legs when jumping.
The reason is that the softness is generally poor, which is also the weakest link in most people's physical fitness indicators.
Body composition can also be called body fat percentage, which refers to the proportion of body fat to body weight. The function of body fat is to lubricate the body and protect the internal organs.
The body fat rate of men is about 10 ~ 20%, and that of women is about 17 ~ 30%. The strength of physical fitness is closely related to the reasonable control of weight and body fat percentage.
Proper weight and body fat composition is a sign of health.
Excessive body fat not only affects obesity and exercise ability, but also destroys the aesthetic feeling of the body. Being underweight has a negative impact on both mental and physical strength, and it is easy to have weak physique and poor bone density.
In fitness, weight and body fat are just some data reflecting the changes of body composition.
In fact, we can often see many bodybuilders with good body composition data, but their body shape and posture are not outstanding. So instead of caring about numbers, look in the mirror more often. Beautiful figure and posture are the most intuitive training marks!
If you want to be healthy and beautiful, you must exercise more and pay attention to balanced development!