Now a struggling personal trainer, Jason Segel reprises his role in Judd Apatow's sort-of-sequel to "Knocked Up" and judging by behind-the-scenes footage from "This is 40," it wasn't exactly hard work for him, TheWrap said.

A new featurette focusing on Segel's relationship with Leslie Mann's character proves he may once again have one of the funniest parts of the movie.

When he's not blatantly hitting on Debbie, he's busy berating her friend Barb -- played by "Bridesmaids" co-writer Annie Mumolo -- for not being as physically fit.

"This is why you're the before picture and she's the after picture," Segel scolds. The comedy hits theaters on Dec. 21, 2012.