Does Creatine Change How Much Sleep You Need?

Holmer revisits a roughly decade-old line of research showing that creatine supplementation can reduce homeostatic sleep pressure in rats — i.e., the brain seems to need less recovery sleep when its energy buffer is topped up. He frames the brain as an energy-hungry organ whose "mental fatigue" is largely an energy problem (slow thinking, fuzzy attention, weaker impulse control), and explains why this convinced him personally to take creatine when his wife was pregnant and reduced sleep was inevitable.