I spent a decade in darkened sleep labs, watching patients tethered to headboxes, and if there is one thing I’ve learned, it’s that people are being sold a lie by their own wrists. You wake up feeling like a ghost, check your smartwatch, and see a “sleep score” that suggests you had a decent night, yet you feel utterly depleted. This is because the industry has convinced you that more time in bed equals recovery, completely ignoring how rest differs from sleep. You can spend eight hours unconscious and still be running on empty if you haven’t actually achieved the…