Doing physics homework with my daughter. The First Law of Thermodynamics (Conservation): energy is always conserved, it cannot be created or destroyed. Energy is only converted from one form into another.
Working with our rhythm of energy conversion is high performance.
High performance is not going 100% for 100% of the time. That means we have to create energy. Not possible.
Like the athlete who recovers after the hard training session. We need to know when energy needs to be converted into recovery rather than motion. When flat out all the time the energy is coming from somewhere you may not be noticing. Coaches, support staff and leaders are highest risk.
The best performers have their energy rhythm exactly right.