I've been doing this and it's really helped with pain in my back/neck, while improving my posture: https://www.youtube.com/watch?v=LT_dFRnmdGs https://www.yout

I've been doing this and it's really helped with pain in my back/neck, while improving my posture: https://www.youtube.com/watch?v=LT_dFRnmdGs https://www.youtube.com/watch?v=LT_dFRnmdGs