Physical activity has been shown to increase one's energy levels while also assisting in the reduction of exhaustion. If you are suffering from specific health conditions, such as cancer, this could be an effective therapy approach for you for you to consider.
Aerobic exercise strengthens your cardiovascular system and improves the condition of your lungs, all of which may contribute to increased levels of energy.
As you move, your heart pumps more blood, which results in more oxygen being delivered to the muscles that are working. Your heart will grow more efficient at pumping oxygen into your blood if you engage in frequent physical activity.
Regular exercise decreases the amount of strain placed on your lungs over time. According to the American Lung Association, this is one of the reasons why you can notice that you are experiencing less and less shortness of breath while you are exercising.