WHOOP Strap 2.0 — Enhance your performance like professional athletes

WHOOP started with the mission of helping athletes, coaches, and teams unlock peak performance. They measure strain, recovery, and sleep to provide actionable recommendations. Now, they've released their wearable to the consumer market. It measures five key indicators: - Heart Rate - Heart Rate Variability (HRV) - Ambient Temperature - Motion via 3-Axis Accelerometer - On/Off Wrist Detection via Capacitive Touch Sensor I particularly like their "always-on" design, which allows you to add the battery pack right to the strap. No more taking off to charge. Also, King James uses it: