What does duration in exercise mean?
<answer> How long you exercise and medical professionals say that 30 minutes or longer. <context> Report Abuse. Exercise frequency.. it is how often you exercise.. medical professionals say that you should exercise everyday. Exercise duration... is how long you exercise and medical professionals say that 30 minutes or longer. Exercise intensity is how hard you work out. Dont work to the point where your in pain but work hard enough that you feel your muscles stretch.