First of all, it is because you will use up a lot of your physical strength in the process of exercising, so when you finish exercising, your body will feel very tired, and human physiology is generally tired after all want to get a long time to rest, so when you exercise, your body must be from the sleep to get the rest of the time, so when you are more tired then the more you sleep, the more y, the more you sleep, the more you sleep. It's not hard to understand, for example, if you've had a busy day at work, then when you get home you're immediately able to fall into a deep sleep.
Secondly, the movement consumes not only physical strength, but also your brain power, because our human limbs can make some movements or belong to the coordination between the small are relying on our cerebellum to the cerebellar nerve center to continue to dominate, so we take a step, lift your hand or do some action, which need to consume our labor, so when your, a day after too much energy will also be Feel tired, so it also needs to rest, when you sleep, your brain will dominate your body to let you fall into a deep sleep, and then he can get the best rest.
In fact, these are in addition to some professional explanations, we no matter who is on this phenomenon is very easy to understand, because we have been experiencing this situation since we were young, go out and exercise back, and then feel tired, want to go to sleep right away, or is a day of walking, and found that their feet are close to the state of numbness, so they also want to rest, more than those who are professionally say that in fact this phenomenon is more Similar to is a kind of inertia effect of our body, as long as we feel tired, then our body will immediately be governed by the brain, into a deep sleep state.