Is that really good advice though? I can understand describing how your worst days are, but to "act" your worse in front of this person? I have to imagine some of these guys are going to know if you're bull****ing or not. I'm only at the point where I'll be getting my first phone interview soon, but if I have to see one of their doctors (which I do agree is BS because they're probably getting paid to write people off as "okay"), I don't think I want to feign anything.