My first tempur mattress purchased stemmed from poor sleep. This is no doubt the best mattress I have owned, and best sleep I have experienced. I used a sleep tracker to assess my sleep patterns for a few months before the purchase. I realized I was not getting much deep sleep, and spent a lot of time tossing and turning. The differences were immediately realized. I consistently sleep better now, deeper and longer. I am a side sleeper; the adjustable frame has made a major difference as I don't need so many pillows anymore, just one. Well worth the investment!