A cool-down should include an aerobic phase and a stretching phase.

A cool-down is an essential part of any exercise routine, and stating that it should include both an aerobic phase and a stretching phase is accurate.

The aerobic phase of the cool-down helps gradually lower the heart rate after intense activity, supporting cardiovascular recovery and preventing blood from pooling in the extremities. This phase typically involves engaging in light, low-intensity aerobic activity, such as walking or cycling at a reduced pace, which allows the body to maintain circulation and facilitate the removal of metabolic waste products produced during exercise.

Following the aerobic phase, the stretching phase is critical for promoting flexibility and helping to prevent muscle stiffness. Stretching the muscles worked during the exercise helps improve the range of motion, aids in muscle recovery, and reduces the risk of injury. It also promotes relaxation and can contribute to an overall sense of wellbeing.

Overall, both components are vital for a safe and effective cool-down, making it important for athletes and individuals engaging in physical activity to incorporate them into their post-exercise routine.