Whats the deal with power meters in cycling injury rehabilitation programs? Are they just a fancy way to sell more gear or do they actually provide valuable insights that can aid in the recovery process? I mean, can a power meter really help you dial in the perfect wattage to avoid re-injuring a wounded muscle or joint, or is that just marketing hype? And what about the protocols for using power meters in rehab - are there established guidelines for how to incorporate them into a recovery program, or is it just a matter of winging it and hoping for the best? And how do you even calibrate a power meter for someone whos recovering from an injury - do you use their pre-injury numbers or start from scratch and rebuild from there? It seems like using a power meter in rehab would require a whole different set of metrics and benchmarks than youd use for regular training, but is that actually the case?