I must also add that normal is a wide range. According to the BMI scale for men that range is 18.5-24.9.

Yes, we know that muscle density vs fat density can throw off the BMI, so let's not get into that discussion.

I'm 5'7". So I could weigh from 118lb to 159lb and still be normal. I'm 141 lb so I'm just 2.5 lb higher than the middle. (18% body fat.) A lot of average guys would consider me skinny.

But in reference to the Roman Soldier, being the same height as me, that would be really normal. And yes, regarding nutrition, in the ancient times, meat would not be as abundantly available as it is now which dietitians say, we eat too much.

In reference the the iceman, Otzi, I read a bit further and found some fascinating information regarding the discovery as well as the findings.

It turned out, he was in his mid 40s (not 50s as I had mistakenly remembered). He suffered from diseases, parasites and tooth decay, which could have accounted for his being 110lbs. So for a middle-aged guy in such pain, to trek up the Alps is still no easy feat. He may have been chased by his killers so his will to survive may have gotten him to trek so far. Still at 5'5", 45 years old and 110lbs, his BMI would put him as normal healthy.