Which of the following is a benefit of physical activity? Promotes Better Sleep All of the Above Controls Weights Improves Energy

Aerobic exercise causes the body to release endorphins.These chemicals can create a level of activity in the brain that keeps some people awake. These individuals should exercise at least 1 to 2 hours before going to bed, giving endorphin levels time to wash out and “the brain time to wind down,” she says.

Your answer is  d.)relationship between pressure and air volume and led to the understanding of how respiration works