man on pneumatic stool having break for exercise in office work

activity arm being benefit body break business busy casual caucasian clerk company computer corporate desk disease employee environment ergonomic exercise eyeglasses firm fit focused for furniture hand having health healthy human leaning lifestyle man net notebook notepad occupational office pain palm paper pen performance pneumatic position posture practice prevention productivity profession professional proper relax relaxation relief safety seat serious shirt short sitting staff stool straight stretch swivel table tablet take therapeutic well wellness work worker workplace yoga