OK picture this,the guy wakes up and it looks like it will be a nice day. So he yells to his wife, that is two feet away in bed, that he's going riding.
She says huh,
He says I'm going riding I'm 75 today and I'm going to ride 75 miles.
She says what, and rolls over.
He says I'll see you tonight,she doesn't move.
15 minutes later she's up looking for him and wondering where he is.
She can't find him so goes back to bed.
Mean while he's out there stabbing at the pedals and giving it hell.
He's cruising along at 6mph averageing 4.
All of sudden he wonders where he's at,
where he's been, where he's going,and how the hell to get home.
I didn't mention he's 2 miles from the house. Anyway don't you think when we're 70 we should reverse this birthday milage thing and go, say 7.0 then 6.9,6.8 as the twilight years gain on us just to be safe,or give us a break. Have fun riding.