The __________ helps you return your body to a normal state after exercise.

The cool down is an essential part of any exercise routine as it helps to gradually lower the heart rate and return the body to its pre-exercise state. After physical activity, especially intense workouts, the body needs time to recover, and the cool down facilitates this process by easing the transition from exertion to rest. It often includes light movements or stretching, which can help to prevent muscle soreness and stiffness, as well as aid in the recovery of heart and lung function. Incorporating a proper cool down can also help in maintaining flexibility and promoting overall relaxation, making it a critical element in a balanced fitness regimen.

In contrast, the other options do not serve the same purpose. An activity log is primarily a tool for tracking workouts, a warm-up prepares the body for exercise by gradually increasing heart rate and circulation, and lifestyle activities refer to the physical activities we engage in during day-to-day life, which do not specifically address the recovery process after exercise.