>> goldberg the ceo of surveymonkey and husband of facebook coo sheryl sandberg seen here at a tech conference last year was found on friday while his family vacationed in mexico. what happened? mexican officials say goldberg was using the treadmill when he apparently fell and hit his head. he was found later still alive and was taken to the hospital on the country's west coast where he later died. exercise related injuries are shockingly common. just search youtube for treadmill accidents. in 2014 there were more than 24,000 treadmill accidents seen in hospital emergency rooms, according to the u.s. consumer product safety commission. and there were 30 treadmill related deaths from 2003 to 2012. goldberg's death has rocked silicon valley, an area he knew incredibly well. >> he got his start at launch music which was a startup that he helped found.