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Oura Ring

Editor's pick

A titanium smart ring that tracks sleep stages, heart-rate variability, temperature, and readiness with best-in-class accuracy — and none of a smartwatch's bulk. Ring purchase plus a monthly membership for full insights.

Eight Sleep

A smart mattress cover that heats or cools each side of the bed through the night, adjusting automatically from your sleep data. Consistently the most-cited sleep upgrade in the longevity crowd.

Sunlighten

Infrared saunas for home use, from single-person cabins to full-spectrum suites. Infrared heats the body at lower, more tolerable air temperatures — the entry point most people choose for a home heat-therapy habit.