Suffering backache due to long hours of working online

We all know that online business are growing fast now a days. There are a lot of online business right now and one of them is the Call Center business. This type of business is run by young professionals who are very good in English communication. They take inquiries over the net and help clients in their problems. This people sat 8 hours a day because that is the nature of their job. Most of call center employees suffer from backache due to less body movement. Based on my experience since I am also working more than what the call center employees rendered in their number of hours; I also have a backpain. I worked more than 8 hours as a matter of fact, I even worked 16 hours a day in my online business. I normally sleep early in the morning already around 1 PM. Yesterday afternoon, I decided to buy some medicine that will help stop and prevent my backpain due to long hours of working online. I bought mefenamic acid 500 Mg., Arthro medicine and a paracetamol in case I will have a headache problem. I took the two medicines last night the Arthro and the 500 Mg. Mefenamic Acid and right now I am really relieve from pain. Thanks to that medicines, it really helps a lot.