An experimental design
Humans, dogs and rats (and/or more suitable subjects for the design).
Subjects are placed on a treadmill.
The speed of the treadmill is increased step by step.
Measuring the heart rate the speed is increased when the heart rate is adjusted to the previous speed. At some speed (coupled with duration) Emax is reached.
Further increases of the speed will build up a backlog of need of recovery.
Lowering the pace step by step will eventually enable the subject to recover from the backlog.
Higher order biological objects will show delayed recovery.
Source: Gamper, J. Biological Energy and the Experiencing Subject. Axiomathes (2020). https://doi.org/10.1007/s10516-020-09494-8