How does physical activity maintaining a healthy weight it increases the amount of energy your body uses at rest it lowers basal metabolic rate of the body it decreases endomorphins levels in the brain

The correct option is this: IT INCREASES THE AMOUNT OF ENERGY YOUR BODY USES AT REST.
Regular exercise increases the amount of energy that one burns while exercising, but it does not stop there, it also increases the amount of energy that one burns while the body is at rest. This is because regular exercise speed up the rate of metabolism of the body and this rate remain high even when the body is at rest, thus, an individual who exercises regularly will lose more energy at rest than some one who is not actively exercising.

Answer active artificial immunization;