If they really don't get the hint, or if their advice is completely wrong, then you should feel empowered to let them know. Silver-Fagan often posts videos of herself working out on her Instagram page , and gets a slew of comments from hate-followers. "I’ve worked a long time to learn as much about fitness as possible and usually just ignore or delete the comments," she says. "But sometimes I’m driven to respond — or even blast their comment out to my followers via Instagram story — because the advice is so ridiculous." For example, one guy told her not to squat below parallel because it was bad for her knees and spine. "I responded by posting a photo of a baby doing a primal squat," she says.