I think most of us would benefit from trying to adopt the correct posture when standing and sitting at the devils window (computer). It has a big impact on breathing and hence blood oxygen. I know I slouch too much and I sometimes find I even need to relax my shoulders in bed too. I went to a chiro a couple of times but can't say it had much benefit, I think a physio would have been better, gentle manipulation rather than bone cracking which I am not convinced does much.