My grandmother would walk 4-5 miles to visit us, well into her 80s, and the route included a rather substantial hill. She lived into her 90s.
Similarly, my grandfather was docker, and then a very active gardener walking to his allotment a few times day, a good few miles round-trip, and lived into his 90s as well.
They were all what might be 'underweight' by the BMI measurements these days. War diets, perhaps, but they were both healthy and fit. Not sure I buy the restricted diet idea for longevity though.
Similarly, my grandfather was docker, and then a very active gardener walking to his allotment a few times day, a good few miles round-trip, and lived into his 90s as well.
They were all what might be 'underweight' by the BMI measurements these days. War diets, perhaps, but they were both healthy and fit. Not sure I buy the restricted diet idea for longevity though.