Worth it
- Real, if sometimes pricey
The far-out options with genuine evidence: active bed cooling (Eight Sleep, ChiliPad) for hot sleepers; weighted blankets (a real trial backs them for anxiety-linked insomnia); better bedroom air / ventilation (lowering overnight CO₂ measurably improved sleep — cheap and badly underrated); and the maximalist routines (Bryan Johnson's 'Blueprint,' Andrew Huberman's toolkit) work because they do the boring fundamentals rigorously. Evidence ●●●○○