I'll start off with my reasons for needing a special mattress - I've had migraines regularly since I was in kindergarten, due to chronic muscle tension exacerbated by a nasty fall I took down a wooden staircase when I was 2. I've had back, neck, and shoulder pain for as long as I can remember. And over the past couple years I've been working to manage PTSD, which binds my muscles up extremely tightly, makes my body run hot (waking up soaked in sweat in the middle of the night - yuck), and makes it very difficult to sleep. The Purple mattress isn't a miracle - I don't spring out of bed every morning feeling perfect and sprightly. I still have mornings where I'm extremely stiff, and I always have to do an hour of yoga first thing to get myself ready to go out into the world. Sometimes I still lay in bed for a long time trying to get my muscles to release before I can sleep. However, the Purple mattress is the best mattress I've found for my needs. I may need to concentrate to get my muscles to release, but the Purple mattress provides exactly the right support my body needs to actually achieve that release. I don't wake up feeling perfect, but I definitely feel my best (and I notice a huge difference when I sleep in a different bed, and even expensive "regular" mattresses don't compare to my Purple). The stiffness I described is much milder with my Purple. Not only that, but the flexible grid that makes up the top few inches keeps me much cooler than any other mattress I've tried. Again, it's not perfect - there's only so much anything can do when your adrenaline's running haywire - but I wake up hot much less often, and toss and turn looking for cool spots way less as well. My only sort-of complaint is that, because of my small size (I'm 5'3", 120 lbs), I don't sink down into the Purple as much as I'd like to. However, I sink down enough that my Purple is actually really soothing for me if I need to crawl in when I'm having a panic attack or flashback episode. The "sinking in" feeling sort of cradles my body and makes me feel more secure and in much less pain, so I can concentrate on breathing and doing my processing exercises to move through the attacks more easily. Because the mattress contours to me, it's a very safe, comfortable, secure place to recenter myself. This goes the same for when I wake up panicking due to a nightmare - this mattress is welcoming enough that I don't usually have the intense need to get out of bed in those circumstances. So I get back to sleep faster (which in turn really helps with my day-to-day management). My migraines are way down, and so are the random muscle spasms I used to get periodically during the day. My pain overall is greatly diminished. Most people don't think about special mattress needs for PTSD, but this mattress has been an amazing addition to my management. Again - not a miracle. But it's definitely the best mattress I've found for my particular needs. Thank you, Purple!