I still remember my first night on my new mattress. After years of sleeping on an old-fashioned innerspring, I switched to a memory foam model. I was so looking forward to the pressure relief and contouring comfort, but I couldn't get used to the lack of bounce.
I wish I'd known how to break in a mattress to help me acclimatize to my new bed. It took a few weeks for my body to get used to the new routine, while the mattress settled into a comfortable and supportive base. If I'd known then what I know, I could have easily sped up the process to get better sleep.
