Here is an article about eating beets or drinking beetroot juice for improved performance:
Either eating beets or drinking beetroot juice may help improve performance, according to some studies. The nitrates in the beets help improve speed and endurance.
Runners and other athletes are starting to consume beetroot and beetroot juice in an effort to improve perfomance. It may also be helpful for older people who use a lot of oxygen in everyday tasks such as walking and tire easily.
One tip if you are cooking beets in boiling water is not to cut off the stalks. If you cut off the stalks, the nutrients will flow out into the water instead of staying in the beet. The study used baked beets and some other studies use beetroot juice.
Here is a link to the article re: beets and athletic performance:
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