T. Colin Campbell: Well, I mean really it should be a diet that is largely focused on plant-based foods, by that I mean vegetables and grains and fruits and legumes, of course, and in particular, sort of whole foods. I mean, we ought not to be taking (laughs), I mean plant foods are really the optimal diet.
Your working muscles can take oxygen out of the blood three times as well as your resting muscles. Your body has several ways to increase the flow of oxygen-rich blood to working muscle: 1  increased local blood flow to the working muscle. 2  diversion of blood flow from nonessential organs to the working muscle.3  increased flow of blood from the heart (cardiac output).our body has several ways to increase the flow of oxygen-rich blood to working muscle: 1  increased local blood flow to the working muscle. 2  diversion of blood flow from nonessential organs to the working muscle. 3  increased flow of blood from the heart (cardiac output).
Arteries carry blood from your heart to the rest of your tissues. Veins return blood from the rest of your body to your heart, so the blood can be recirculated. To return blood to your heart, the veins in your legs must work against gravity. Muscle contractions in your lower legs act as pumps, and elastic vein walls help blood return to your heart.