In the context of an early Holocene hunter-gatherer society, where the physical demands of subsistence were high and where medical care was limited to what the community could provide, reaching 35 to 45 years of age represented a life of meaningful duration.

Stature estimation from long bone lengths uses regression formulas developed from populations of known living height.

The femur — the thigh bone, the longest bone in the body — is particularly useful for stature estimation.

The formulas produce a range that reflects the statistical uncertainty of the method and the variation within any population.

The Hourglass Cave man’s estimated stature, shorter than the modern American average, is consistent with what is known about the body proportions of early Holocene populations in the Americas, which tended toward somewhat shorter but more robustly built physiques than many modern populations.

The robusticity of the skeleton — the density and development of bones in ways that reflect sustained muscular activity — is visible in specific features: the prominence of muscle attachment sites on the long bones, the cortical thickness of the bone walls, the overall solidity of the skeletal structure.