There's a couple good old articles you can read on AM if you search how to pulse SD. I think Matthersby wrote or linked to one? Anyway, basically the principle is that you need an oral that works very rapidly - sdrol, m1t, dmz, I believe phera & thus Mithras, msten, methyltren, anadrol. Thing is, it also needs a very short half life so it exits the body very rapidly, as the entire point of pulsing is to never fully go on. The major benefits of pulsing are less shutdown, side-effects, & use of a harsh oral for longer, safer than otherwise possible. The main benefits are to run something powerful like sdrol & reap the benefits only on days you need it (3-4 days/wk) around workouts so you can go longer, like 6wks. And since you don't shutdown nearly as fast you can scrape by without running any base & still feeling pretty good. Liver isn't being loaded every day & back pumps & such are greatly reduced. Sdrol, & to a lesser extent dmz & msten, work great because the half-life is under 6 hrs, they're dry & thus don't require the use of an AI (more $), & are already cheap. And no other steroids are necessary - no test, no dheas, stano, nothing. The whole point is to try to preserve your natty production as long as possible. M1T, M1A & other gyno-aggravating compounds could work but now you need an AI the whole time, so that's more cash/chemicals (although most AI's promote natty test production). It's common for natty tboosters to be run through the pulse as well if not running an AI. Since natty test production is highest in morning, you want to be able to lift as early as possible - this places your exogenous hormone dosing closer in line with the natural curve. You bang the sdrol preworkout & postworkout, evenly split, with a bias towards more preworkout if it's uneven dosing, & you dose on the bigger normal side (30-40mg total/day of sdrol vs. 20-30 normally). Say 20mg pre/10 post to maximize the anabolic window. And only 3-4 days/wk, up to 6 wks. 4wks or less with only 3 workouts/wk, it's often considered that a SERM is unecessary. Otherwise, after the pulse run a traditional shorter PCT. Clomid, nolva, erase should do, tbooster if you like. The big draw is getting 12lbs off sdrol in 6wks instead of 4wks means feeling better while on, less backpumps, better sleep, better libido recovery, & since the muscle had a bit more time to 'bed-in' if you will, gains are often more keepable - say 10lbs kept instead of 7. And it's cheap. One old bottle of 60 10mg sdrol caps should cover a 6wk pulse. Clomid, nolva, arimistane, some cycle assists & tboosters & you're out the door for under $200 for 6wks of heavy lifting. Whew. That's it, in a nutshell.
so I'm going to really have to be careful with every exercise I do.. 
