#ketones

2 articles

A sunlit outdoor running track in late afternoon, shot from a low angle with shallow depth of field. In the foreground, a matte black bottle with a minimal off-white label sits on the edge of a warm terracotta-colored track lane, beside a folded white towel and a small glass of amber liquid catching golden light. Condensation beads on the bottle. A faint heat shimmer rises from the track surface and softens the background.

In the midground, slightly out of focus, a lean athlete in a sage-green tank top and charcoal shorts runs on a treadmill-like stretch of track, a thin sheen of sweat on their shoulders, their expression focused and calm. Their motion is gently blurred, suggesting endurance and rhythm. Long soft shadows stretch across the lane lines.

The background fades into hazy peach, apricot, and pale yellow tones, with the suggestion of tall trees and a distant stadium wall. Warm sun flare enters from the upper right, creating a subtle glow and a few soft light streaks across the frame.

Subtle editorial touches: a small notebook with a pencil and a stopwatch rest beside the bottle, hinting at data and timing without any text legible. The color palette is warm and muted, with terracotta, cream, sage, and charcoal accents, and a fine film-like grain. The composition leaves open negative space on the left third for a headline overlay. The overall mood is clean, modern, and health-journal inspired, natural and aspirational, with a calm scientific curiosity rather than hype.

Ketone Drinks in the Heat: Longer Endurance and Sharper Memory?

BY DR. GYMBRO · Oct 30, 2026

Ketone drinks are supposed to be for fat-burning biohackers, but a new heat-stress trial suggests they might also help you finish stronger. In 17 trained men, ketone monoester plus caffeine extended time to exhaustion to 8.9 minutes versus 7.0 with carbs plus caffeine, after 90 minutes of loaded treadmill work at 34 °C. Working-memory accuracy on the 1-back task improved too, while heart rate and core temperature didn't differ meaningfully. But 2-back, reaction time and the hit-and-avoid task showed no benefit, and the study was small, male-only and single-session. Here's what the data show, and what they don't.

Wide landscape editorial photograph of a mountain biker mid-ride on a dusty red-orange singletrack trail in the South African Western Cape, golden hour light raking across the scene. The rider is in sharp focus on the right third of the frame, wearing a weathered cycling kit with a race number plate on the handlebars, dust kicking up from the rear tire. Behind them, rolling hills covered in fynbos shrubland and silhouetted protea plants fade into soft, hazy blue mountains. Warm amber sunlight creates long shadows and a soft rim light around the rider and bike.

In the lower left foreground, slightly out of focus, a small minimalist glass vial and a clear water bottle sit on a flat sun-bleached rock, with a few drops of liquid catching the light. Next to them, a simple matte paper notecard and a pencil suggest data collection, with no legible text. The vial and bottle are clean, understated, and modern, with no branding.

The color palette is earthy and refined: terracotta, ochre, sage green, dusty teal sky, and cream highlights. The composition uses shallow depth of field, a generous negative space in the upper left sky for headline overlay, and subtle film grain. The mood is contemplative, skeptical, and quietly sophisticated, like a feature photograph from a high-end outdoor sports and science magazine. Natural, candid, cinematic, shot on a 50mm lens with soft contrast and muted saturation. No futuristic elements, no glowing effects, no molecular graphics, no text.

science research

Ketone IQ Raised Ketones at Cape Epic, But Did Nothing Else

BY DR. GYMBRO · Oct 27, 2026

Riders at the 8-day Cape Epic drank Ketone IQ twice a day and hit about 1 mM blood ketones, yet their fatigue, heart rate, reaction time and recovery looked the same as placebo riders. The double-blind trial tested R-1,3-butanediol in real racing conditions rather than a lab. The authors say the modest ketosis was not effective, and that butanediol should not be confused with ketone esters. With only 18 riders, the study has real limits, but it is a sobering data point for anyone considering a pricey ketone drink for recovery.