Sleep Gadgets: From Trackers to Smart Rings, What Do You Really Need?

"What you don't measure you can't improve." This management mantra applies to sleep too. Until a few years ago, the only way to know how you slept was... to ask yourself in the morning. Today we have labs on our fingers.

1. Wearables - Oura Ring, Whoop, Apple Watch

These devices measure heart rate variability (HRV), temperature and movement.

• What they're for: Not to "sleep better" directly, but to understand the causes.
• Example: If you see that your deep sleep plummets every time you have a glass of wine or eat late, you have data to act on. It's a behavioral awareness tool.

2. Blue-Blocker Glasses

The simplest and most effective technology. They filter the blue light from screens that suppresses melatonin.

• Tip: Look for orange/red lenses for the evening (they block 99% of blue). The transparent "computer" ones only block 10-20% and are useless for sleep.

3. Neurostimulation Devices - Optional

Tools like Apollo Neuro or vagal stimulation devices emit imperceptible vibrations that "reassure" the nervous system, shifting it from "fight or flight" (sympathetic) mode to "rest and digest" (parasympathetic). Useful for those with pre-sleep anxiety.

4. Smart Masks

Blackout masks with integrated headphones to listen to meditations or white noise. Total darkness is essential. If you can't darken the room 100%, a €20 mask is worth more than a €300 tracker.

Beware of Orthosomnia

Obsession with the perfect "sleep score" can cause anxiety, which in turn worsens sleep. Use technology as a compass, not a judge. If you wake up rested, you slept well, regardless of what the ring says.