Here are some instruction videos on cupping..
Cupping for shoulder pain
Cupping for knee pain
Cupping for back pain
Prolong seating/standing will cause severe low back pain and chronic diseases such as: Degenerative Disc Disease and even early death. Make sure you spend a few minutes of your lunch to do some quick stretches!!!
http://www.health.harvard.edu/blog/too-much-sitting-linked-to-an-early-death-201401297004