Optimizing physical health involves more than just the absence of illness; it includes achieving an optimal level of fitness, stamina, and strength.

“we also know that even if I don't have diabetes or coronary heart disease or high blood pressure even if I don't have any diagnosable medical condition I may not be at an optimal level of physical health right I may not be able to for example walk around the block without getting shorter breath I may not be able to play with my kids because my physical fitness and stamina is is insufficient I may not be able to lift my luggage when I go to the airport because I don't have enough strength in my body”