In preparation for the seventh season of "It's Always Sunny in Philadelphia", McElhenney put on 60 lbs of extra weight and let his beard grow out to give extra humor to his character and add a new comedic direction for the season. His co-star Charlie Day described the weight gain as "disgusting" and said that the rest of the cast were "a little on the fence about it for his own personal health and safety". McElhenney subsequently lost 23 lbs in a month after the season was finished filming. He lost more later in the year to film the next season. On how he got in such great shape, McElhenney joked in an Instagram post, "Look, it's not that hard. All you need to do is lift weights six days a week, stop drinking alcohol, don't eat anything after 7pm, don’t eat any carbs or sugar at all, in fact just don't eat anything you like, get the personal trainer from Magic Mike, sleep nine hours a night, run three miles a day, and have a studio pay for the whole thing over a six to seven month span. I don't know why everyone's not doing this. It's a super realistic lifestyle and an appropriate body image to compare oneself to."