What are the top 10 benefits of physical exercise?
Although the benefits of doing physical exercise regularly and following the WHO recommendations are many, the main ones are3,4:

Weight control. Physical exercise, together with diet, helps prevent weight gain and also helps not to regain the weight lost after losing weight. More intense activities make the body burn a greater amount of calories. If the person needs to lose weight, they will have to do more exercise to burn more calories than they consume.
Less risk of disease. Regular exercise helps prevent or control many health problems and diseases. Some of these pathologies are: many types of cancer, stroke, hypertension, type 2 diabetes, arthritis and metabolic syndrome (a set of metabolic disorders consisting of centrally distributed obesity, decreased concentrations of HDL cholesterol, the ‘good’ cholesterol, linked to high-density lipoproteins, elevated triglyceride concentrations, increased blood pressure and hyperglycemia).
Better mental health and improved mood. Physical exercise improves the mental health and mood of the person who practices it. The body releases chemicals that can help the person who practices it feel better, happier, more relaxed and, consequently, also reduce the risk of depression.
Help to stop smoking. Practicing exercise when the person is trying to quit smoking can help reduce anxiety and symptoms related to withdrawal.
Better sleep quality. It can help both to fall asleep and to sleep better and for a longer period of time.
Increases energy. Regular physical activity (complying with WHO recommendations) makes oxygen and nutrients reach the tissues and helps the cardiovascular system to work better, therefore, it improves the amount of energy that the person notices.
Better sexual health. In the case of men, it reduces erectile dysfunction and helps improve sexual function in those who already have this problem. Regarding women, it can increase sexual arousal.

Reduce the risk of falls. For older people, regular exercise, especially strength and balance, reduces the risk of falls.
It improves the ability to learn and different cognitive functions. The endorphins released during exercise improve brain function.
It lengthens life. Doing physical exercise reduces the chances of dying prematurely, since being healthier means living longer.