#coffee

1 article

A wide, editorial-style still life shot from a slightly elevated angle on a pale oak gym bench, bathed in soft morning window light. In the center sits a matte ceramic cup of black coffee with delicate steam curling upward, flanked by a small white scoop of coffee beans and two identical glass vials, one filled with a few grains of fine powder and one empty, hinting at dose comparison. Next to the cup rests a pair of worn white boxing hand wraps, loosely coiled, and a slim black stopwatch with its face softly visible. In the foreground, a minimalist notebook lies open with blurred handwritten numbers and a simple pen sketch of a bar graph with bars of equal height, subtle and unreadable, suggesting a null result without any legible text. A small brass kitchen scale sits to the side with a few coffee beans on its tray.

In the soft-focus background, a boxing gym interior is visible: a hanging heavy bag in muted charcoal, exposed brick wall painted off-white, and tall windows casting long diagonal light across the floor. The color palette is warm and restrained: cream, sand, espresso brown, soft charcoal, with a single accent of muted terracotta orange in the hand wraps and a faint sage green in the notebook cover. Shallow depth of field with creamy bokeh, fine film grain, and gentle shadows give it a contemporary lifestyle-magazine and wellness-journal feel. The composition leaves generous negative space on the left third for headline overlay. Clean, calm, trendy, and tactile, with natural textures like wood grain, ceramic glaze, and cotton fabric. No people, no text, no futuristic elements.

Kopi dengan Dosis Kafein Rendah Tidak Meningkatkan Sprint pada Petarung Elite

BY DR. GYMBRO · 23 Okt 2026

Berpikir kopi pra‑latihan dapat meningkatkan sprint? Sebuah uji coba acak, double‑blind, crossover pada 15 atlet tempur tingkat nasional menemukan tidak ada manfaat performa dari dosis kafein 1,5 mg/kg dan 3 mg/kg (sekitar 100 mg‑200 mg untuk atlet 68 kg). Daya puncak, daya rata‑rata, indeks kelelahan, bahkan perkiraan kontribusi sistem energi tidak berbeda dari kopi tanpa kafein. Namun ini adalah hasil nol pada sampel kecil, bukan bukti bahwa kafein tidak efektif, dan sebagian besar studi positif menggunakan kapsul 3–6 mg/kg. Berikut perhitungan dosis, catatan penting, serta apa yang sebenarnya harus Anda lakukan sebelum sesi berat berikutnya.