Final answer:
It is true that one should always start a workout with a warm-up and end with a cool down. Warm-ups prepare the body by increasing blood flow, reducing the risk of injury, while cool downs assist in recovery and muscle soreness reduction. Body temperature rises quickly during exercise, demonstrating the need for efficient heat dissipation.
Step-by-step explanation:
The student asked whether one should always begin a workout session with a warm-up and finish it with a cool down. The correct answer is true. Warming up is essential for preparing the muscles for exercise by increasing blood flow and heart rate, which in turn minimizes the risk of injuries. Cooling down after exercise helps in gradually reducing the heart rate and can aid in recovery and reduce muscle soreness.
In terms of body temperature, during a warm-up, the body temperature rises, and during a cool down, it gradually returns to normal. The body can warm up quickly during exercise due to the increased metabolic activity generating more heat. This heat must then be dissipated through methods like sweating and breathing to prevent overheating.
To support the importance of warm-up and cool down, one may reference the fact that muscles and tendons are less likely to get injured when properly warmed up before activities like running or playing soccer. Similarly, cooling down aids in stabilizing the body's physiological state post intense activity.