I didn't need one to know that, but I was surprised by how little drinking would change my resting heart rate (even two beers at dinner might keep my heart rate

I didn't need one to know that, but I was surprised by how little drinking would change my resting heart rate (even two beers at dinner might keep my heart rate elevated for half of the night) and by how much/how long heavy drinking can affect RHR/HRV - a heavy night might affect RHR for 2-3 days...