I just remembered I wanted to share some things I read in a little booklet I got for subscribing to Runner's World called "10 Free Running Reports" and then I have to get busy around here.
This is from the "Special Report for Women" and this section is geared for us women over 40. Sorry guys and younguns........

First of all Joan Ellis, age 51 (my age) won the 2000 Boston Marathon veteran's division in 3:05:46.
The report states:
1) we should train with younger runners
2) pump iron 2-3 times a week (improves muscle strength and bone density)
3) alternate hard and easy days (applies to all runners but especially to masters (I like that word), who take longer to recover. Don't run more than 50 to 60 miles per week. (not a problem - yet, HA!)
4) Consider hormone therapy - shows promise in reducing cholesterol, building bones, and easing menopausal symtoms. Also, may benefit brain health, prevent some cancers, and possibly reduce risk of osteoarthritis.
5) Running lowers your risk of adult-onset diabetes and heart disease, the number one killer of women over 60
6) Contrary to popular belief, running won't ruin your knees. Some studies suggest that it might actually help prevent arthritis by pumping nutrients into knee joints.

Interesting stuff, huh?