Ben Affleck always looks good, but his bod is going to get even more shredded over the next few weeks!

Ben has been prepping for his role in the new Batman flick by pumping iron and working out with Rehan Jalali, who got the sexy star in tip top shape for his role in The Town back in 2010. It's not like Ben is parading around in a tank top, but we can definitely tell that his biceps have gotten significantly beefier.

So when does Ben start shooting? Wife Jennifer Garner chatted with Jimmy Fallon on Wednesday and revealed that her hubby is leaving her behind this weekend! “I get home Friday, and then, he leaves that day for Batman.” Jen didn't say that Ben was heading to Detroit, but several sites are reporting that as a filming location, and the Israeli website Ynet reports that new Wonder Woman Gal Gadot has already left for Michigan.

But when's he coming home? We're going to start having serious withdrawals...