I’ll admit it: I usually skip the cool down after my workout. New research shows, however, that this bad habit can actually be detrimental. A “proper” cool down means that you progressively slow down your pace until you reach a normal heart rate. Simply stopping can cause dizziness and fainting. You should also make sure you stretch to prevent injuries of the muscles that were just being used. While you may not think that the cool down is an important part of your workout, it actually is extremely beneficial. It allows your body to return to its normal state after it has been stressed by exercising.