I have been having issues with my hip hurting, I'm 43, fairly active, work a reg 9-5 job in healthcare. On my butt a lot for work driving and sitting in an office chair, which can't be helpful. Google says it's likely bc I am a side sleeper and it places pressure on my hips and my legs being squished together leaves my body out of alignment and there's no give, so it suggested I sleep with a pillow between my legs to help relieve the pressure it causes. Tried that for months with truly no relief. Did some digging and after researching a bit decided on a memory foam topper bc there's nothing wrong with my mattress. I received my topper yesterday. Came home on lunch and opened it (you're suppose to let it fully expand for 24 hours. I let it expand for 11 hours before putting it on my mattress %26 going to bed, woke this am with barely any hip pain. I'd say she passed the test %26 I look forward to seeing the benefits over time if just on night helped