Ummmm ... God?

I know the Bible is full of mysteries and things that we won't understand until later. But sometimes I wish he'd just given us a little more detail. (If it was a space issue, maybe he could have left out a few of the details in Deuteronomy and Numbers to address stuff like this.)

From Genesis 5 ...

5 Altogether, Adam lived 930 years, and then he died.
8 Altogether, Seth lived 912 years, and then he died.
11 Altogether, Enosh lived 905 years, and then he died.
14 Altogether, Kenan lived 910 years, and then he died.
17 Altogether, Mahalalel lived 895 years, and then he died.
20 Altogether, Jared lived 962 years, and then he died.
23 Altogether, Enoch lived 365 years.
27 Altogether, Methuselah lived 969 years, and then he died.
31 Altogether, Lamech lived 777 years, and then he died.
32 After Noah was 500 years old, he became the father of Shem, Ham and Japheth.

So here's what I want to know ... what did that really look like? I mean physically. What was their development process like?

When you live for 600 years, when do you reach adolesence? At 150 years old?

Are you in puberty for, like, 50 years? (ugh ... NO thank you.)

Did they reach adulthood in their 30's (like we do) and just spend the next few hundred years as an adult?

Or maybe each stage was proportional to today ... so childhood was about 10% of their total life, adolescence another 10%, young adulthood was 20% and then finally adulthood.

And what about the physical aging? Right now, at age 80-90, most people's bodies have pretty much been worn out. But if you still had to live for hundreds of years, it would be pretty miserable if you had to do it like most 85-year-olds. Obviously Noah still had it after 500 years (vs. 32) so he can't have been too decrepit.

Seriously, I want to know. Anyone have any insight? (Skip, I know you gotta have something on this.)

This is definitely going on the list of things to ask God when I see him.