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British researchers say beet juice could help people with cardiovascular or respiratory diseases and even endurance athletes.
They are not sure exactly why it works but they think it could be a result of nitrate in the vegetable reducing the amount of oxygen burned up by exercise.
After drinking beet juice, a group of eight men aged 19-38 was able to cycle 92 seconds longer than when they were given a placebo. That translates to a two percent reduction in the time taken to cover a set distance.
The study is published in the Journal of Applied Physiology.
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