Buy with evidence

Gear

Data-based buying analysis with clear evidence labels and no invented hands-on testing.

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Gear

How Accurate Is Wrist Heart Rate for Running?

Apple's new comparison favors its watch, but the useful question is whether your wrist heart-rate trace is reliable enough for your training decisions.

Sep 14, 2026 · 7 min read

Gear

Omius Headband: Cooling Without Proven Speed

The first independent study found the $224 Omius headband cools your forehead and improves comfort—without changing core temperature, heart rate, or 5K time-trial results.

Sep 4, 2026 · 6 min read