You remember the constant reminders from your mother to sit up straight and maybe the sharp elbow to the side too. In case that didn't work, try 'Upright Go'.

It's a tiny wearable device that you stick to your skin at the base of your neck that vibrates when you slouch to remind you to correct yourself. Although a bit on the expensive side, it beats a constricting and uncomfortable brace! That and if used properly, you may be able to train yourself to make better sitting habits in as little as two weeks! Considering the health risks that bad posture poses, it may be the best $80 you've spent in a long time!