During the warm-up stage, what is one effect on the body?

During the warm-up stage of exercise, one of the primary effects on the body is increased cardiorespiratory activity. This phase is vital for preparing the body for more intense physical activity. As the body warms up, heart rate and respiratory rate rise to meet the increased demand for oxygen and nutrients by the working muscles. This heightened level of cardiorespiratory activity improves blood flow, enhances oxygen delivery, and prepares the cardiovascular and respiratory systems for the upcoming exertion.

Additionally, this stage helps to raise muscle temperature, increase flexibility, and decrease the risk of injury by preparing the muscles and joints for movement. All of these changes work together to enhance overall performance and reduce the likelihood of strains or sprains during more vigorous activities.