Exercise: it is a set of rules involving physical strength and skills, and it is also a behavioral activity constrained by habits, which is usually competitive.
There is no object that does not move, and there is no movement that can leave the object. Movement is conservative, that is, it can neither be created nor destroyed, but its concrete forms are diverse and can be transformed into each other, and the total amount of movement remains unchanged during the transformation.
Exercise, a kind of physical activity that can promote health, is a set of rules involving physical strength and skills, and is also a behavioral activity constrained by habits, which is usually competitive.
It is not advisable to rest immediately. During strenuous exercise, people's heart beats faster, muscles and capillaries dilate, and blood flows faster. At the same time, the rhythmic contraction of muscles will squeeze the venules, prompting blood to flow back to the heart quickly.
At this time, if you stop to rest immediately, the rhythmic contraction of muscles will also stop. A large amount of blood that originally flowed into the muscle can't flow back to the heart through muscle contraction, resulting in a drop in blood pressure and temporary ischemia of the brain, which may lead to palpitation, shortness of breath, dizziness, pallor and even shock and fainting.
Therefore, after strenuous exercise, we should continue to do some small movements, and then stop to rest after breathing and heartbeat are basically normal.
It is not advisable to take a bath immediately. After strenuous exercise, in order to keep the body temperature constant, blood vessels on the skin surface dilate, sweat pores open and sweat increases, which is beneficial to heat dissipation. At this time, if you take a cold bath, the blood vessels will contract immediately because of sudden stimulation.
The resistance of blood circulation increases, the burden of heart and lung increases, and the body's resistance decreases, so people are prone to get sick. For example, taking a hot bath will continue to increase the blood flow to the skin, and too much blood will flow into the muscles and skin.
It leads to insufficient blood supply to the heart and brain, ranging from dizziness to collapse shock, which is easy to induce other chronic diseases. So after strenuous exercise, you must have a rest before taking a bath.