Its good that attention is focused on blood circulation & how this can help those in need to weight management. Beetroot juice increase production of Nitric Oxide (NO) in the blood via a metabolic pathways involving The Endothylium, Citruline Malate & Arginine.
NO is the same one responsible for Viagra's effectiveness & its effects are localised in the genitals.
However this is really old news. Body builders have been using L Arginine & Citruline Malate or Acetyl Citruline to assist the body in making Nitric Oxide since the 1990's
3 gram dose of citrulline malate yielded improvements in vascular function and vasodilation meant longer lasting workouts, less fatigue & I am guessing higher calorie burn.
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