i had that, max 4 hours a night for ages, bad coz it adds to all the other stuff, and was smoking myself to death coz what else to do all night! and i got into a downward spiral of body racing (in all ways) that was taking me nearer & nearer the edge. i don't like taking sleeping tabs but have used them on & off coz i dreaded the nights so much but so needed a rest & break from thinking, and had to slow down a little to be able to tackle things that would help me longterm. i've recently been given anti-histamines that have a sedative effect and i treat myself to a 'proper' nights sleep now & again - the sleep i get with these is delicious, not heavy, drift off, sleep THROUGH (yes!) wake naturally, (no after effects) and it helps recharge me for a bit. lots of sea swimming and battling waves helps a bit too.