You could replace your usual stretching routine with the following set of stretches designed to help insomnia. It was put together by Iyengar who has an extremely good reputation. "Unless freedom is gained in the body freedom of the mind is not possible"
I'd suggest you replace one of your regular epic workouts with training with a serious internal element - Iyengar Yoga, Tai Chi, Shaolin. (starts looking for cover)
The idea is to do the routine without straining and to get the perfect result you'd always be supported on blocks or bolsters or with belts when you couldn't rest on the floor. You should sleep better even without going to all that hassle, though. The usual gumf about not tackling poses beyond you, holding back till you're familier with a new routine, sharp pain is bad, take care of your knees and neck ... These are all pretty easy poses though.
At the end do the exercise TKD suggested. It's a good one.
I've pasted links to pictures of the postures. Some come from scarily twee sites but the posture directions are ok.
http://www.yogajournal.com/poses/478_1.cfm http://www.yogajournal.com/newtoyoga/892_1.cfm http://www.yogajournal.com/poses/491_1.cfm http://www.thelittleyogastudio.com/a...03/061903.html http://www.yogajournal.com/poses/477_1.cfm http://www.yogajournal.com/newtoyoga/155_1.cfm
adho mukha paschimottanasana An Iyengar specific variation on the earlier seated forward bend using a stool and cushions...
No 5 at
http://www.womenfitness.net/top10_yoga_asthma.htm. This is the Iyengar specific variation
http://www.yogajournal.com/poses/790_1.cfm http://www.yogajournal.com/poses/481_1.cfm http://www.yogajournal.com/poses/480_1.cfm http://www.yogajournal.com/poses/479_1.cfm http://www.yogajournal.com/poses/472_1.cfm http://www.yogapoint.com/info/swastikasana.htm or
http://www.personalmd.com/news/yoga4_81000.shtml#sidd ( you can just do the second on it's own without all the other poses)
http://www.nshouseofyoga.com/Pose-Viparita%20Karani.htm http://www.yogajournal.com/poses/482_1.cfm while here do the excercise tkd suggested. Afterwards the Iyenagar 'trick' is to focus on the skin over the centre
of your forhead moving downwards (without doing anything physical to move it).