Heart rate variability (HRV) is the primary metric that the WHOOP fitness band uses to calculate your recovery. In this article I look at just how much HRV contributes to recovery, plus how a high HRV variance can make things tricky.

In November 2023, Texans running back Dare Ogunbowale attempted a field goal in a real NFL game. I wanted to figure out whether or not this was the right move, so I made a win probability calculator for 4th and Goal situations that could be applied to that game and any others.

Turning a light-hearted game into a math problem.

How many long will a person take take to ride the bus? In short: a while.