The Whoop Strap 2.0, a new fitness tracker currently in use by active Navy SEALs, is determined to improve recovery time in athletes and keep your data safe while doing so. With 24/7 tracking, it’s one of the first fitness trackers approved for the MLB to use during games — and it’s the official recovery wearable of the NFL.

When it first launched, a Whoop tracker was anywhere from $500 to $5,000 per year — depending on the athlete’s subscription plan. Today, the Whoop Strap 2.0 is available to everyday athletes thanks to a drop in price to just $30 a month (with a six-month commitment).

The Whoop records heart rate, HRV, ambient temperature, motion, calories burned and sleep, thanks to tracking from biometric data taken 100 times per second, 24 hours a day. As someone who is continuously wearing two trackers at once to figure out what works, this is one of the only apps I’ve used that provides me with feedback and a next step. When I wake up in the morning, I can see if I’m ready to hit the road for a five-mile run, or if a rest day is the better choice. When the day is over, I can see how much sleep I need to make up for the strain I put my body through that day.

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