I am 5 feet tall, weigh 109 pounds, medium build, not a 'tiny bird' of a female, I do weight lifting and exercise often. We bought a Tempurpedic mattress..not good for me!
If you do not weight much, you will NOT 'sink in' to the mattress, and therefore, it feels like you are sleeping on a metal "slab"--Ouch! Only the upper part of my hips sink in at All, leaving the rest of my body misaligned all night! When I roll over, I am awakened for about 10 minutes, till any part of my body does sink in...after about 3 of the episodes, my night is Shot! They do Not warm you of this, when you buy this $$ mattress.
Beware--you Can return the mattress after 30 days, but ONLY for store credit--NOT a refund--AND you pay a 10% restocking fee!
That is over $300, for US!!
Review about: Tempurpedic Mattress.