<s>[INST] I sit in front of the pc for a long time , usually i do not have pain , but today i started to workout , I went for a walk and 5 minutes in to it I begin to feel pain at my lower back . is this because of me sitting such a long time in work in front of pc , about 8 + hours dailyThanks in advance [/INST] hi   you are very true. all you need is-1) avoid sitting for long period that is 30-45min, and then get up.2) good diet rich in calcium and vit.D like milk and milk product without fat and less sugar.3)posture correction i.e. become a soldier and sit and walk like a sodier.4)regular back muscle strengthening excercises like surya namaskar under guidance.   And above all its normal to have pain on day one at work out.wish you good health and take care of your back. </s>