A: There are dramatic differences between the way chimpanzees live in the wild and the way chimpanzees are forced to live in laboratories. In the wild, chimpanzees live in very diverse social groups and may travel several miles in one day.
Ergonomics for Prolonged Sitting. Sitting for prolonged periods of time can be a major cause of back pain, cause increased stress of the back, neck, arms and legs and can add a tremendous amount of pressure to the back muscles and spinal discs. Additionally, sitting in a slouched position can overstretch the spinal ligaments and strain the spinal discs.
So, if you are up and about for 15 hours, you should be sitting for not more than 9 of those hours. More than that, and you risk getting obesity, diabetes, cardiovascular disease and even cancer, he cautions. Thats because sitting for long periods causes fat to accumulate in abnormal places  organs and muscle tissue.