I bought this mattress, box spring and bed rail for my grandson,  felt very comfortable. I bought another for myself.  I have sleep apnea, bad back, overweight so I don't sleep very well. I wake up stiff and sore, headaches and neck pains. Today was the second day I slept on it I woke up no stiff neck or body soreness, refreshed  very alert and no headache. I have a Fitbit that tracks my sleeping patterns the two pics will be for my old bed and then the new one. The new one I had longer deep sleeps longer RMS and less awake time