20s 25-30 years American Caucasian European adult bristly business businessman businesspeople camera casual class classroom coffee cup collaboration color computer cooperating cooperation corporate corporation course cup desk education eye contact face female further education goodlooking group handsome horizontal image indoor indoors learning looking male man mug office office worker offish participating people person room school serious severe severity shirt sit sitting stockphoto stubbly study studying table team teamwork thoughtful three tie together training training course twenties unshaven unsmiling using white white collar worker woman work worker working young