When it comes to our health, knowledge is key, and depending on your goals, you can do plenty from the comfort of your own home to manage your weight loss, weight gain, or general body composition.

Scroll down for a transcription of this episode. Jeopardy! champion Amy Schneider tries a body scan meditation to sharpen her focus and calm her nerves as she prepares for the Tournament of Champions.

ABC News' Becky Worley writes about her experience with elective medical tests. Becky Worley is a consumer and technology correspondent for "Good Morning America." When my 41-year-old best friend was ...