7.Best Vegetables for Building Muscle: Beets
Beets are high in potassium, magnesium, fiber, and many vitamins. Beets also add the extra kick you need during weight lifting and aerobic training, due to its sugar content.
Beetroot juice, in particular, is clinically proven to boost stamina by allowing users to exercise 16% longer. Beetroot juice reduces oxygen uptake “to an extent that cannot be achieved by any other known means, including training,” says one scientist.
A research team came to this conclusion by conducting a clinical study involving 12 men. Before they were put under a series of cycling tests, each man received 140 ml organic beetroot juice or a placebo for 6 days. Time-trial performance and power output improved in athletes who consumed beets.