If you are serious about optimizing your physical performance, managing stress, or biohacking your sleep, you have likely realized that step counters and basic heart rate monitors are no longer enough. The frontier of wearable technology has shifted toward tracking a much deeper biological metric: Central Nervous System (CNS) recovery. Currently, the two undisputed heavyweights in this space are the WHOOP band and the Oura Ring. But when both claim to tell you exactly how recovered your body is,