#guarana

1 article

A wide, softly lit editorial flat-lay on a pale warm-gray stone countertop, shot from slightly above. On the left, a small rustic ceramic bowl in matte cream holds a handful of dried guarana seeds, dark glossy brown with pale cream arils, a few spilling onto the surface. Beside it sits a halved fresh guarana fruit in vivid red-orange, split open to show the white flesh and black seed inside, looking like a tiny eye. On the right, two open clear capsules rest side by side. One is filled with fine white caffeine powder, the other with a fine earthy brown guarana powder, and a little of each dusts the stone in delicate, deliberate lines. Between them, a minimalist matte-black espresso cup with a thin ribbon of steam rises on the right edge of the frame. A brushed-steel stopwatch and a slim dark-green linen notebook with a pencil sit in the upper background, slightly out of focus, to hint at performance testing without clutter. A few green leaves of a guarana vine curve in from the top-left corner, catching soft light.

The lighting is natural window light from the left, with gentle long shadows and a subtle warm highlight on the seeds. The palette is muted and modern: warm creams, terracotta red, deep espresso brown, sage green, and charcoal accents. The background is clean with generous negative space on the upper right for headline text. Shallow depth of field, crisp focus on the seeds and capsules, fine grain, and a calm premium magazine look like a contemporary wellness and sports-science journal. No people, no text, no logos, no futuristic elements.

Guarana vs caféine : à même dose, seul le guarana augmente la puissance maximale

BY DR. GYMBRO · 22 oct. 2026

Même dose de caféine, capsule différente, et seul le guarana a entraîné une hausse statistiquement significative de la puissance maximale. Dans un essai croisé randomisé chez 18 hommes actifs, le guarana a fait grimper la puissance de pointe de 4 % par rapport au placebo, alors que la caféine anhydre n’a pas atteint la significativité. Mais le guarana n’a pas surpassé la caféine en comparaison directe, les écarts restant descriptifs. Voici les chiffres, les limites de l’étude, et comment doser le guarana en fonction de sa teneur en caféine si vous souhaitez l’essayer.