The Science of Better Sleep: What Actually Works (and What's a Myth)

Why Sleep Quality Matters More Than Quantity

You can spend 8 hours in bed and still wake up exhausted. Sleep quality — measured by time in deep sleep and REM stages — matters far more than total hours. We reviewed the latest sleep research and consulted with three sleep medicine specialists to create an evidence-based guide to actually improving your sleep.

• Temperature is king: keep your bedroom at 65-68°F (most impactful single change)
• Light exposure: get 10 min of morning sunlight, dim screens 90 min before bed
• Consistent schedule: same wake time daily, even weekends (yes, really)
• Caffeine cutoff: noon for most people (caffeine's half-life is 5-6 hours)
• Alcohol myth: it helps you fall asleep but destroys sleep quality

The biggest myth? That melatonin is a powerful sleep aid. Research shows melatonin only helps you fall asleep about 7 minutes faster and adds roughly 8 minutes to total sleep time. It's useful for jet lag and shift work but isn't the miracle supplement marketing suggests.