It may seem backward to say that exercise can improve your level of energy. After all, if you exercise strenuously you may feel tired and physically worn out. So how in the world does physical exertion lead to more energy? Here is what happens inside your body …
When your body receives physical stress, your muscles actually get torn down. The more physical exertion you put on your muscles, the more those muscles tear.
When your workout is over, your body magically goes into rebuilding mode. Your brain sends signals to your muscles that begin repairing them stronger and bigger than they were before. This is how you notice muscle development when you lift weights or take on an exercise program after periods of no exercise.
Your body is preparing itself for future physical activity. It wants to make sure you are strong enough and have enough energy to undergo that same workout in the future. This is the reason you will “plateau”, or stop building muscle when you continue to work out with the same amount of weight and the same number of repetitions.
As it turns out, the same thing happens to your energy levels. Dr. Patrick O’Connor released research in the early 21st century that shows when you are tired and need an energetic boost, a walk or jog is probably better than a nap. His research was conducted at the University of Georgia exercise psychology laboratory in Athens, Georgia.
His research was published in Psychological Bulletin. The relationship between exercise and energy involved more than 6,800 volunteers. Incredibly, over 90% of the research showed that there is a consistent and positive relationship between energy and exercise. Simply put, regular exercise leads to more energy.