. >>> and then finally, casey affleck had a huge night at the golden globes taking home the award for best actor for his role in "manchester by the sea." but turns out casey forgot to thank one important person, his big brother ben, so ben was on "jimmy kimmel" last night when the host pointed out the snub and ben responded as any sibling would do by revealing childhood secrets about his brother. take a look. >> this would be the very first time someone would win an oscar who didn't brush his teeth from ages 10 to 14. this would be the very first person to win an academy award who once asked his brother if "back to the future" was a true story. [ laughter ] >> oh. >> i love siblings. nobody can get you like a sibling. >> ouch. no one. >> yep, but not to worry, ben, casey does have another chance to show his gratitude if he wins that bafta award and that is "pop news," everybody. >> thank you, lara. >> thank you, lara. [ applause ] >>> coming up, you know, this is the great debate. how much should you exercise? there's a so-called magic number. how much exercise do you really need? dr.