Do sleep trackers actually improve sleep?

They improve sleep indirectly by revealing patterns. You might discover that caffeine after 2pm costs you 30 minutes of deep sleep, or that alcohol reduces your REM by 40 percent. Data drives better decisions.

Is it safe to sleep with a sound machine every night?

Yes, at moderate volumes (50-60dB). Many sleep specialists recommend sound machines as a first-line treatment for noise-related insomnia before considering medication.

Best Tech to Help You Sleep Better