Better posture and less compression of your intervertebral disks are two likely causes.
Another factor to bear in mind is that your height varies by about an inch according to what time of day it is measured. Your intervertebral disks collectively compress by an average of an inch over the course of a day, and gradually re-expand overnight while you sleep.
Last edited by paleo-bunny; 03-24-2012 at 02:47 AM.
Reason: spelling
F 5 ft 3. HW: 196 lbs. Primal SW (May 2011): 182 lbs (42% BF)... W June '12: 160 lbs (29% BF) (UK size 12, US size 8). GW: ~24% BF - have ditched the scales til I fit into a pair of UK size 10 bootcut jeans. Currently aligning towards 'The Perfect Health Diet' having swapped some fat for potatoes.