How old (or young) are you?

[Trekhawk]

What I've heard is that when a woman is pregnant her blood volume increases and that it never goes back to pre-pregnancy levels so each time she has a child she ends up with a higher blood volume. More blood = more hemoglobin = more O2 to the muscles

Crikey lucky I had three kids - imagine how slow I would have been otherwise.

42 year old Trek - who is very slow even after three kids - hawk.