I graduated BUD/S Class 181 after starting with class 179; I was medically rolled back due to dual stress fractures in both legs six weeks before graduation. That workout up there at the top is one of those "get in shape for BUD/S" types of programs for civilian types to think they're cool.
For the most part during First Phase you DO just do push/pull routines, a buttload of running, a buttload of swimming, and a buttload of carrying/paddling your boats around. Obstacle courses over and over again, soft sand runs "to that dot in the distance and back. You have three minutes, bust 'em"; you are going non-stop from 0430 until at the very least 1800. During dive phase you'll be out even later doing night dives. Then you have to prep your room, clean your gear and make sure you uniform is good to go for inspections. Instructors can wake you up at any time to do whatever they want you to - and you'd better be able to do it. Go<x>d forbid one of them doesn't get laid, or gets in a fight with his girlfriend; then it really would suck to be us.
You're ALWAYS in the surf zone getting wet for some reason or another; which means you constantly have sand in all of the nooks and crannies - consequently that leads to ditching underwear as it just rubs raw sores in your crotch. I still don't wear underwear to this day. You are ALWAYS and I mean ALWAYS doing pushups, fourth phase gets 20 at a time, First phase gets 30, Second Phase 40, and Third Phase 50 - each time someone in the class screws up you get another set. I remember being in the leaning rest for hours. Once you've screwed up and get dropped, ANY instructor can just hammer the dogsh|t out of you; and they like to tag team. One person didn't complete fifty perfect push ups? Do it again. Wha? Someone ELSE didn't do perfect pushups? "Gent's we can be here all day - doesn't matter to us" Things is, once you're screwed it didn't matter if they were perfect or not. "Okay guys, you don't want to do pushups - that's fine. Bear crawl (125 yards) to the surf zone and back in two minutes. Go." "Oh, didn't get it done in two minutes? Let's try it in a minute and forty five seconds." "No? Hmmm, minute thirty..." On and on and on... Swimming 8000 yards in an afternoon... scuse me, all afternoon three times a week. Day in and day out, rain or shine for over eight months. I have never been so constantly wasted in my entire life and I highly doubt I ever will be again.
Don't even get me started on Hell Week or how much tougher it gets once you're actually IN the Teams - then you're dealing with world class athletes who are your peers. We actually had tri-athletes come out and, as a PR type of deal, hang with us for a week. No can do.
Best job on the planet and I wouldn't have missed it for the world.
Steve
PS: That Discovery show just cracks me up to no end. Class 240 something or other. Several of the instructors during the filming of THOSE episodes went through BUDS/S with me.