This mattress has changed so much for not just me but my husband. Before, he would wake up in the middle of the night constantly to toss and turn; but now, he sleeps like a rock. We both have chronic back pain and now we don't cringe with pain when we wake up. Unbelievable! We loved it so much I recommended it to my parents. Needless to say, my dad is no longer complaining about his bed giving him backaches.