Alex Viada squats 705 pounds.

He deadlifts 745 pounds.

He benches over 400 pounds.

It gets crazier: He can also run a 4:15 mile.

And he runs marathons and ultramarathons.

And he's an Ironman triathlete.

There are some bodybuilders who worry they'll lose muscle if they walk too far. There are powerlifters who won't run across a street because they're worried it will make them weaker. So how does Alex stay big, lean, and strong, while competing in some of the hardest endurance sports in the world?

Listen to this episode to find out.