Anterior Tilted Pelvis

Anterior tilted pelvis: this is not a problem. If your pelvis is truly too tipped, you'll back it up some and if it just right, you'll just skip some steps  and go on to follow the other directions. In my experience, however, often people who think they are too tipped are actually swayed + tucked. It is easy to mistake a sway for an anterior pelvic tilt - both send your bottom back - it's the location of the curve that is critical. Tipped pelvis gives you a curve very low down in your spine (at L5-S1); a sway gives you a curve higher up in the lumbar spine. If it is a sway you have, you may still need to work on tipping your pelvis forward, but not till after you straighten out your sway. Memory foam mattress: I recommend a medium firm mattress that conforms to some degree to your body. This is also what the statistics point to as the best kind of bed. Memory foam can be very comfortable for side sleeping because it conforms a great deal. Unfortunately, for back sleeping, it lets your body sink in to the bed a bit too much and leaves your shoulders rounded forward. When you stretchlie (either on your back or side), it makes you tolerate a much wider variety of mattresses. So begin by learning how to do that and maybe you don't need a new mattress.