This thread hits home for me. As I get older, I have had more sleeping problems (while at home). Last fall I was touring in California near Lompoc. In a short amount of time my left leg started to really kill me. (could not bare weight). It turns out that I have deep vein thrombosis. (blood clots in my leg veins). Even though I have been active/ biked up to 12k year for the last 44 years, my body does not produce enough of the stuff that keeps your blood from coagulating/ producing these blood clots. Getting old really sucks. Looks like I'll be using blood thinners for a while.