Quote Originally Posted by OakLeaf View Post
I'm going to take a wild guess and speculate it's your core strength. You start getting tired, your lower back sags in, your pelvis tilts forward, and your soft tissues pay the price. Sometimes you can rearrange yourself and be okay afterwards. Other times you're just too tired.

Does that sound right?
This sounds reasonable - but sometimes it is backwards At the Tour de Cure last weekend the first 10 miles was very uncomfortable, but the last 15 miles (after I took a break) was fine. Then again, I had someone riding with me those first 10 miles who is a slower rider than I, and I do not think that I was in my usual riding position. After the break I was by myself and picked up speed/cadence.

This does make sense though - and will pay close attention to it tonight when I go for a longer ride. I also had a hard lower-body workout with my trainer right before riding last night so I may have been more tired than I realized - lots and lots of squats last night with some pretty heavy weights. I had not considered that - and while my core strength is improving I am sure it has a long way to go.

Thanks, I will pay attention to this tonight.