Why does blood pressure increase during exercise?
As we exercise, we use our muscles. Our muscles need oxygen to
function. Therefore, the more we exercise, or the harder we
exercise, the more oxygen we need. In order for our muscles to get
that extra oxygen, we need to breathe more. The oxygen then enters
our blood and our hearts beat stronger and faster in order for the
oxygen to reach the muscles as quickly as possible, thus why our
blood pressure increases.