TV highlights: 'Do No Harm' series finale

Saturday, Fox News Channel launches the health-and-wellness series "A Healthy You & Carol Alt" (at 4 p.m.), hosted by supermodel Carol Alt. Discovery Fit & Health's Saturday night primetime lineup is all about people's sex lives, culminating with the new docu-series "Secret Sex Lives: Swingers" (at 10), which follows five Atlanta couples who lead double lives.