I suspect there is no really useful number to give for most such benchmarks due to the massive variance within "healthy people" an in fact how "healthy" is defined.
Look how many different figures/calculations are banded around for questions like "how many calories do I burn running X distance or Y minutes" for instance.
Could we start off by sourcing numbers from various physical training programs and fitness exams? e.g. policemen, firefighters, the military, professional athletes.
Look how many different figures/calculations are banded around for questions like "how many calories do I burn running X distance or Y minutes" for instance.