 As it turns out, no, you don't really have to wait 30 minutes after eating to go swimming. Doctors say there's no need in most cases to wait. That old warning stems from worry that people might drown or struggle because blood will be diverted to their full stomachs instead of their muscles. But Dr. Matthew Badgett of the Cleveland Clinic says people will still have plenty of blood flowing in their muscles after eating. More at townhall.com.