#capsaicin

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A wide, editorial-style flat lay on a warm, matte cream stone surface, shot from slightly above in soft natural morning light. On the left, a ceramic espresso cup in muted terracotta holds dark coffee, with a few roasted coffee beans scattered beside it. In the center, a small wooden board holds three bright red chili peppers, one sliced open to show pale seeds, next to a small pile of coarse red pepper flakes. On the right, a pair of minimalist off-white running shoes with sage green accents rests at an angle, and a slim stopwatch with a clean white face lies in front of them. Three small matte white capsules sit in a neat row at the center of the composition, a quiet nod to the placebo and the active doses. Soft shadows fall to the lower right. A sprig of dried eucalyptus and a folded linen cloth in oatmeal tones add texture at the edges. The palette is warm and restrained: terracotta, chili red, cream, sage, and charcoal brown, with a gentle pop of red as the focal accent. The depth of field is shallow, so the foreground beans are slightly soft and the chilies and capsules stay crisp. The mood is clean, modern, and magazine-like, in the style of a contemporary health and science journal. There is no text, no people, and no logos, and plenty of negative space on the upper left and right edges leaves room for a headline overlay.

咖啡因+辣椒素在10公里赛中优于安慰剂，单独使用辣椒素无效

BY COACH RYAN · 2026年10月17日

在一项交叉实验中，只有咖啡因与辣椒素的组合在10公里跑中显著优于安慰剂，而单独服用辣椒素没有任何效益。提升主要来源于咖啡因本身，未见二者的协同作用。对体重75 kg的跑者而言，6 mg/kg的咖啡因相当于约450 mg，约相当于四到五杯咖啡的摄入量。咖啡因组出现失眠、焦虑、头痛和心动过速等不良反应，使用前需慎重。