option, isn't being used as much as it could be. our next guest is one of the study researcher of the study. author of "uncountable" and a physician is here with us. doctor, talk about the kind of surgeries. what kinds? >> interesting we looked at the study and hysterectomy, appendix removal, and other surgeries. when ben rother had his appendix removed he was back on the field in 25 days. there have been 25 studies showing fewer complications,