- posture
You can also train your sense of proprioception through aerobic exercise. Take slow running (jogging), which is the easiest aerobic exercise to do.
First of all, while focusing on breathing, it is important to relax while maintaining a straight line from the tailbone to the top of the head. Start running slowly while checking that the neck, shoulders, arms, legs, and body are not tense. In particular, release tension in the abdomen to maintain the feeling of releasing the stomach. Keep your head in a relaxed position so that you feel that the top of your head is constantly rising toward the sky.
On the other hand, the trapezius muscles are tense and keep dropping the shoulders so that the shoulders do not lift. Make the feeling that your ears and shoulders are gradually moving away from each other.
Keep the feel of the heels moving back and forth rather than diagonally. It is easier to relieve shoulder tension if you move your hands back and forth on both sides of your arms as much as possible without coming in front of the midline of your chest.

- Benefit
Continuing Zone 2 exercise, which keeps the oxygen consumed and used oxygen in balance, increases the energy production efficiency of the cells. To put it more precisely, not only the ability of mitochondria is strengthened, but also the number of mitochondria is increased. It also helps strengthen immunity and prevent aging.
This effect does not appear much in exercises above zone 3. It means that exercising hard and hard unconditionally is not necessarily a good thing.
The most effective aerobic exercise is to devote 80 to 90 percent of the total exercise time to zone 2 exercises and 10 to 20 percent to strenuous 4 to 5 steps.
For example, when you do an hour of aerobic exercise, you can maintain your zone 2 heart rate for about 50 minutes, and then do a 5-step exercise that approaches your maximum heart rate for the last 10 minutes (or 5 circles).
This is much more effective in improving physical strength or athletic ability than exercising with energy for 60 minutes to exhaust your physical strength, and it is much more helpful in improving your cardiorespiratory function.
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