Summary
The video discusses the challenges of assessing muscle recovery and how to determine when a muscle is ready to be challenged again. It highlights that muscles recover at different rates and the recovery schedule should be determined on an individual basis. Muscle soreness is one tool that can be used to assess local level recovery. Resting heart rate, core temperature, and grip strength can be indicators of recovery at the systemic level. Grip strength, in particular, is highly correlated with performance and recovery. A physical scale, similar to an old-fashioned bathroom scale, can be used to measure grip strength and assess recovery and cognitive function.