I guess it's technically cool, but one should be aware that there is no such thing as "good posture" or no accepted definition that lends itself to good science. slouching isnt bad, remaining in the same posture for a long time is, or at least it can lead to discomfort. people that sit up straight all the time still get back pain. i slouch all the time and i don't. The popular attachment to specific configurationa of your joints that look aeathetically acceptable os orthorexia, not science.