Came here to say this. Seeing the horrible toll that even a small amount of drinking does is a powerful motivator. Even with just Fitbit, RHR was a clear signal

Came here to say this. Seeing the horrible toll that even a small amount of drinking does is a powerful motivator. Even with just Fitbit, RHR was a clear signal. WHOOP makes it clearer. Biofeedback is underrated. I have foregone many drinks out of concern for my heart health, which otherwise would be invisible. Whoop's recovery score, in my experience, is highly correlated with mental performance, not just physical. The only market to athletes, which is horrible because I wish there was a model that would make sense to give to my parents. You have to really want that data to pay $30/month.