Yes, I think it is necessary because a healthy body can make the mind healthy also. Exercise has a lot of benefits, not only it can make muscles defined but can boost productivity, will-power, and creativity. It can also force the human's powerhouse of the cell, mitochondria to work harder. The harder the mitochondria work, the happier the person is. Students should be taught about the benefits of what they are doing so they would appreciate and not complain about the aches they gained from moving their body intensely.