I guess those things can be taken either way.
Of my work colleagues, 1 is a regular cyclist and last year completed the etape du tour in france, his partner is expecting in august.
Another is a cyclist and runner that has completed one london marathon in 4hrs, he has 2 kids and the youngest is 6 months old.
Interestingly and unfortunately the only colleague of mine that has had trouble is someone that has enjoyed morrocan woodbines on a regular basis.
Then again, my brother also has enjoyed them and has 2 healthy kids
Fitzy I wish you and your wife the best of luck and I hope that your dream will come true. As I found out recently it really is the most beautiful experience to be a parent and one that I thought had passed me by.