Is the old cliché true — is laughter the best medicine? Kurt Andersen and Mary Harris, host of the podcast Only Human, go to a laughter yoga class to find out. Also, we hear from a neuroscientist who studies laughter and moonlights as a standup comedian. Comic Chris Gethard explains why he resisted getting help for his depression out of fear of losing his humorous edge — and how getting treatment transformed his career. And we find out when medical humor is — and is not — just what the doctor ordered.