circadian rhythm
Beat the October Slump: A Morning Light Therapy Protocol Before the Clocks Change
Does light therapy work for winter depression? The most direct test of that question ever run compared it against an antidepressant, head to head, and found essentially no difference. Ninety-six patients with seasonal affective disorder were randomised to either 30 minutes of 10,000-lux morning light plus a placebo capsule, or dim placebo light plus 20 […]
Sleep Debt: What the Science Says About Catching Up on Lost Sleep
You cannot fully repay a week’s sleep debt with a weekend lie-in. In a controlled trial, adults who slept five hours on weeknights and as long as they liked at the weekend still showed the same metabolic disruption as people who skipped the catch-up entirely, and their reaction-time scores stayed well below fully rested controls […]