Why does it feel good to slouch?
The cervical and lumbar spine have a lordosis, or forward convex curve. ... Initially, slouching can provide a feeling of relief due to relaxation of the fatigued muscles; however, in the long term, repetitive or prolonged stress to the passive structures of the spine can result in injury to those tissues.
Does good posture make you happy?
Maintaining good posture won't only make you look more confident; research shows that you'll actually feel better about yourself. A study in Health Psychology found that people who feel stressed can kick their negative mood and even boost their self-esteem by sitting upright.