It didn't take long for Schwarzenegger to get his action chops back after his eight year hiatus in government: "I didn't lose it all, I realized, I could get back into the action, take a knife out, kill a guy, cut his head off, all the fun things; you wish you could do some of those things in politics but you can't."

Schwarzenegger remembered working with Crews on his first movie, "The 6th Day." "You've gained muscle size and definition," he said admiringly. "I walked into the gym and saw you have been gaining 25 pounds of muscles in the last few years."

"I can die now, Arnold likes my muscles," Crews replied.

"I hope you don't take it the wrong way," said Schwarzenegger. "I've got a man crush going on."

"Expendables 2" is the movie Stallone always wanted to make, said Crews. "He literally broke his neck to make the first one. Now we have Chuck and Van Damme and female Yu Nan and Liam Hemsworth, the youth injection. It doesn't get any bigger, doesn't get any better."

Schwarznenegger said he's ready to do a sequel to "Twins," maybe about triplets. Universal and Ivan Reitman have shown interest in being involved, he said. They're looking for a writer: "I think it will be hilarious." Stan Lee animated feature "The Governator" is still being developed, he said.

Schwarzenegger on staying in shape: "it's a lot of running, climbing, jumping, at night, I put ice on my knees and ankles and hips. The body and muscles don't recuperate the same way as when you're 30."

Stallone agreed: "We move a little slower, lighter. it's become more scientific. Randy and Terry are more into the iron game. Parts wear out, you have to change your way of thinking, more stretching, use your own body weight, keep limber, otherwise you keep snapping tendons. You pace yourself. You don't do every day all out action. You can do all the action, you just have to be more thoughtful, to do it well on the first and last day of filming. I take cortizone shots. It comes with the territory, the more injured I get on film, the better it does."

Here's the official synopsis:

The Expendables are back and this time it’s personal...
Barney Ross (Sylvester Stallone), Lee Christmas (Jason Statham), Yin Yang (Jet Li), Gunnar Jensen (Dolph Lundgren),Toll Road (Randy Couture) and Hale Caesar (Terry Crews) -- with newest members Billy the Kid (Liam Hemsworth) and Maggie (Yu Nan) aboard -- are reunited when Mr. Church (Bruce Willis) enlists the Expendables to take on a seemingly simple job. The task looks like an easy paycheck for Barney and his band of old-school mercenaries. But when things go wrong and one of their own is viciously killed, the Expendables are compelled to seek revenge in hostile territory where the odds are stacked against them. Hell-bent on payback, the crew cuts a swath of destruction through opposing forces, wreaking havoc and shutting down an unexpected threat in the nick of time — six pounds of weapons-grade plutonium; enough to change the balance of power in the world. But that's nothing compared to the justice they serve against the villainous adversary who savagely murdered their brother.