12-Stomach and intestine
Because the body pumps more blood to the muscles, it reduces the amount of blood sent to other organs that are not prioritized at this time, such as digestion. This can lead to stomach upset. Movement, absorption and secretions in the stomach and intestines can all be affected .
In contrast, the brain benefits from increased blood flow. Immediately, brain cells will begin to function at a higher level. You will feel more alert and awake during exercise and more focused afterwards. When you train regularly, the brain becomes accustomed to this frequent increase in blood and adapts by activating or deactivating certain genes. Many of these changes stimulate the functions of brain cells and protect against diseases such as Alzheimer’s, Parkinson’s and brain aging usually associated with age. Exercise also triggers an increase in the chemical messengers in the brain called neurotransmitters, which include endorphin, often cited as the cause of the mythical “feeling of happiness and pleasure” after training. The brain also releases neurotransmitters like dopamine and glutamate, to allow the movement of the arms and legs, for example, as well as gamma-aminobutyric acid or GABA, a neurotransmitter that slows things down, to help you achieve your goals. movements in a harmonious and controlled way. You will also feel better thanks to an increase in serotonin, another neurotransmitter well known for its role on mood and depression.
This part of the brain is heavily involved in learning and memory, and it’s one of the only sections of the brain that can make new brain cells. The training facilitates this process, thanks to the extra oxygen sent into the brain. Even when you stop exercising, these new brain cells survive, while many other changes in the brain during exercise eventually return to their normal state if you become less active.
The hypothalamus is responsible for the temperature of the body, as well as the management of salt and water among others. As your body heats up, it asks the skin produce sweat to keep you at the right temperature .