The driver was fit. The second stint was still expensive.
The visible problem appeared late in repeated driving: increasing effort, reduced comfort and a slower return to readiness. Adding more conditioning was the obvious answer, but not yet the justified one.
- Compare first-stint and later-stint physical and cognitive response
- Track thermal strain, body-mass change and recovery behaviour
- Review timing of food, fluid, cooling and downregulation
- Separate general fitness from restoration between exposures
The performance plan shifted from simply adding workload to improving the complete cycle: preparation, in-car exposure, immediate cooling, fluid and fuel replacement, downregulation and reactivation.
The relevant outcome is not whether the driver can survive one hard stint. It is whether useful capacity can be restored before the next one.
