Just recently came across a podcast by Jocko Wilink. He is a pretty unique guy. A little over the top and it has taken him a few episodes to find his voice and flow, but I really enjoy it.
He is a 20 yr vet of the Seals and currently a leadership consultant. Very interesting guy. He is super into working out and other self discipline type things.
His stuff is a combo of war stuff that he derives leadership and or discipline stuff from, as well as discussions about workouts, diet, jujitsu, etc. He even has one about Henry Rollins Band.
I recommend it.