What you do in our day to day lives is affected by our posture and will determine to a large degree on how much muscle tension develops in your back and neck. Our baseline posture is determined by genetics, you can basically blame your mum or dad on how upright we are. Then there are all the addons that can drag you down: the classic teenage slump, how we think and feel, our occupation and recreation activities, gravity and much more. So whatever parameters you were born with there are things you can do to improve your presentation and prevent the gradual decline downwards. Start now with this amazing collection of exercises because later is too late, if you don't start now you can become set in a rigid pattern that can be impossible to reverse when you are older.