茶中含有一种叫多酚的复杂混合物。这种物质据信能帮助放松或扩张动脉，从而使血流更为平缓。
Tea has complex compounds called polyphenols which are believed to help the arteries to relax or dilate, thus enabling a smoother flow of blood.
毛细血管扩张把更多氧气送入肌肉中并带走排泄物，如二氧化碳和乳酸。
Your small blood vessels (capillaries) will widen to deliver more oxygen to your muscles and carry away waste products, such as carbon dioxide and lactic acid.
研究者说，糖的摄入提高血尿酸水平，降低氮氧化物水平，这个化合物可扩张血管降低血压。
Sugar consumption increases serum levels of uric acid, which may lower the levels of nitric oxide, a chemical that is needed to dilate the blood vessels to keep the pressure low, the researchers said.
应用推荐