Originally Posted by
Bikey Mikey
Must be nice that 18mph is leisurely.
At this time of year, cold, air density, extra clothing, I'm a lot slower (10 - 15 %).
Trust me ... I ain't that fast! I've noticed the cold effect myself. My wife phsaws it, but I think the colder air is substantially denser ... enough to make a huge speed difference.
BTW, I get my 35 miles a day on my commute, so it's really like doing 17.5 miles twice a day. That sounds silly, but I think that's a lot easier. And when I feel like taking it easy, I do so ... no guilt here.
TromboneAl, for what it's worth, I don't think you're overtraining, nor do I think you're getting old. Have you seen a doc to see if maybe you have some kind of nutritional deficiency going on? Might be worth a look.