Interesting. This is why I need to find out more about it. Wife just strapped it on me one day, said 'wear this', and that was that. My numbers are wildly different from what hers were though, so she's not much help making sense of them. I just looked at the last day I played. 27 holes over 2 outings, gym, and mostly running around for work, and my day strain was 4.2. :confused2:. It definitely seems to undervalue what I view as strain at the gym. Seems more based on cardio effect than strain that actually requires dedicated recovery.My golf strain is surprisingly high, but can confirm my heart rate is pretty high throughout the round. I must be in bad shape or a nervous golfer. I’m finally starting to get into a fitness routine and really looking at my recovery/strain balance.