John Krasinki admits that bulking up for his role in 13 Hours: The Secret Soldiers of Benghazi made him "so much more confident" in the bedroom.

"Totally selfishly, [sex] is so much better for me being jacked," the 36-year-old actor -- who recently welcomed his second child with wife Emily Blunt -- tells ELLE magazine. "Because you feel so much more confident and you see yourself as this much more sexual person, which is really fun."

EXCLUSIVE: John Krasinski Dishes on Baby No. 2 and Wife Emily Blunt's Mary Poppins Prep

His 33-year-old wife also isn't complaining about her husband's fit physique. “The truth is, she really is that person who would like me any way,” he adds. “But I don't think she's going to kick the eight-pack abs out of bed.”

Krasinski also can't get over how great Blunt looks after just having a baby in June. "Even I have to work way to hard to even look like this," he joked with ET. "And she just does it by waking up."