Human Body: Pushing the Limits (Discovery Channel)

Parents need to know that each episode of this fascinating four-part docuseries centers on a separate group of body functions (brain power, sensations, etc.); depending on the topic, there may be images of kissing, people doing dangerous things, and so on. The series will intrigue science-savvy tweens and teens, but younger kids may not like the images of humans' internal structures (or the stripped-down, skinless, skeleton-like "person" used to illustrate how bones, muscles, and so on work). The frank discussions of how bodies respond to danger (shutting down functions or feeding off themselves, for example) could also upset young or sensitive viewers.