Most of us believe that cool down is very essential after exercise. If one is asked why it is so, then different people may have their different opinion. Some may say that cool down after exercise helps to get the lactic acid out while according to others it helps to cool down the tight short muscles.
One may be surprised to know that in real there is no literature behind doing cool down after zero. Experts say that it is no sense of doing cool down after any exercise or workout and its benefit is next to zero. It is true that people do cool down after exercise but it is also not false that very few know the reason why they do so. Most of them believe that it is an established fact and there is nothing to study about it.
Some people who are doing cool down are not even clear on what a cool down should be. Weather it is stretching or doing the same exercise slowly or it is just having a casual walk after your exercise. To be true, it is just an understudied topic and no one knows why it is done and how it should be done.
Few experts believe that lactic acid is good for your muscles and act as a fuel. They say that it is better not to cool down after exercise because lactic acid produced changes back into glycogen which is a fuel for muscles and if you cool down, it gets wasted.
To conclude, there is only one particular fact to which exercise researchers agree and that is not to stop all of a sudden after any exercise. According to them, while doing intense exercise, the blood vessels in your legs expand in order to send more blood to your legs and feet and in doing so your heart beat increases. Now if you stop all of a sudden, your heart slows down and your blood is pooled in your legs and feet. This may cause dizziness or in some cases it may even lead to death.