two men working in correct sitting posture on pneumatic leaning seats

activity adjustable age aged armrests back balding being benefit business busy casual cchanging chair coach colleagues computer concrete corporate correct coworker coworkers coworking design desk desks desktop dimension dress dutie duty electric employee environment ergonomic eyeglasses factors firm focused furniture half headrest health healthy heels height high human industrial keyboard laptop laptops leaning lifestyle male men middle mobile mobility model norm notebook office performance pneumati pneumatic position positions posture productivity profession professional profile proper real rotary safety seat seated seats sit sitter sitting space stand standard standing stool straight strain support swivel system table team tension therapeutic tilt together trainer two typing wall well with work workers working workstation writing young