When I was a young man, I could sleep anywhere with no problems, on the floor, on a couch, in the bed of a truck, even on a concrete porch. Fast forward to when I hit 30. I started waking up with various back and neck pains the very day I turned 30, almost like an age related curse. Who knew being 30 could suddenly feel so old and painful? I've tried a few different beds but I never bought one that I considered expensive (anything over $1,000.00 is expensive to me) but my parents have tried every new fad that came out over the years including those number beds and not memorable foam and adjustable hospital type beds. They have never found one that helped them and would ask if I wanted their old one when they got the next new one. I'd try them with no better results than they had. Now that I'm in my 40's, my pain in the mornings was worse than ever. I'd always wake up with lower back pain and could hardly get out of bed sometimes but I would have to or I'd just hurt even worse the longer I stayed in bed. After getting out of bed and moving around for an hour or so, I would be ok, until the next morning at least. I don't even remember how I stumbled on an ad for Purple. I read several reviews and the vast majority were very positive, a good sign, but I'm a skeptic and have seen too many cases of false reviews so I kept looking and researching on it. I admit, I liked the egg test video, it wasn't too commercial and boring like a lot of ads, it seemed they were having fun and really believed in the product and expected it to sell it self if you tried it. I gave in and decided to give it a shot, it couldn't be any worse than what I had. I figured with the 100 night trial, I'd have no problems because frankly it wouldn't really take that long to see if it was all they claimed. I put the mattress on the bed the day it came in and went to bed at my normal time. I've never had any problems falling asleep, it was always getting good sleep that was the problem. I was surprised when I woke the next morning actually rested for a change. I had not awoken a single time in the night due to tossing and turning. To be fair, I did have a slight ache in my shoulder but none in my lower back, that's a first in about 4 years for me! The second morning I found myself not wanting to get out of bed, not because it hurt to move but because I was actually comfortable. I now have a love hate relationship with my Purple mattress. I love going to bed on it, but I hate to get out of it and go to work in the mornings. There's worse problems to have though, like waking up tired and in pain every morning. I've noticed that this bed actually supports me everywhere. It has enough give to let my booty sink in and have the mattress actually reach and support my lower back. So instead of my back conforming to the mattress, it conforms to my back. I believe this is why I now sleep sooo much better. I go to sleep on my back and sleep that way until the sun comes up and I start rolling over to get away from the sunlight. I'm not 100% sure it would be as comfortable if I slept on my side but I have had no problems reading on my side and being uncomfortable so I think it would be ok for that too. One other thing (two actually) that I like is, even though it has enough give to allow for my rounder and heavier body parts to sink a little, which is what allows it to support the other parts, it doesn't just let you totally sink in like a typical foam mattress does and therefore it doesn't get hot like a foam mattress does. For reference, I'm 5'8'' tall and weigh 200lbs. I've been telling my family, friends and even the local UPS delivery driver about how much I love this mattress and how much better I feel since I purchased it, now I'm telling you too. IT'S GREAT! Thanks, Purple, you've made my nights and mornings enjoyable again!