By Tanner Garrity In this new age of biometrics, we no longer have to judge a quarterback’s performance solely on how many touchdowns or interceptions he threw when the game was on the line — we can actually study how his heart performed under pressure. WHOOP, the popular wearable technology platform that has massive contracts with MLB, the PGA Tour, CrossFit and the U.S. Army, to name a few, also has a variety of brand ambassadors, like Patrick Mahomes, who actually wears the device during games. During warmups, the national anthem, a scramble on third down and so on, his heart rate is reacti…