I love that old school conditioning. Guys on bodybuilding boards put down such things as push ups, chins, mountain climbers and running. Truth be told you could take any top shelf bodybuilder and turn them into an exhausted wreck quickly using old school methods.
I was on the Navy web site awhile ago and one question was what type of weight training should a canidate for the Seals be doing. The answer came back stating in effect, there are no weights or machines in Seals training.
Having strength without power and conditioning is useless in athletics.