OK.....Sworder's comments are valid because most are clueless when it comes to steroid use. Going up is the easy part. The hard part is restoring your system. If you just take var, and even though it is one of the safest steroids (of course you need at least 50mg a day) you will be shut down at the end, and like I said, you will be, hormonally speaking in a bad state for most of a day.
To use var, you need a base and the best base is test w/ a long acting ester.
So, you can't run var w/ out test. And anyway, the test will increase your performance more than the var. I recomend 200 mg of test every 5 days. More is not better. Adding EQ is what you should be doing to really increase your cardiovascular abilities.
More importantly, you will need drugs to help restore your endocrine system. Now my pct is somewhat different than the other vets on this forum. The diff is mainly over the fact that the best way to go is through tiny amounts of hcg eod during your whole cycle.
I find that the above protocol is a huge hassle for most, and don't suggest it for people I work with. The only reason I don't do it either is because my HCG is prescribed to me, and a 10kiu bottle is nearly $90. using tiny amounts would "waste" half of it. A few years ago I made quite a bit of money in real estate, but those days are long gone and I am now on a budget.
My protocol, and the one I recomend for people I work with is to use 1500iu's eod at about 2/3rds way through the cycle (and I like long cycles) and then at the end. You will need an AI for when you use the HCG, and possibly while on cycle (this is a genetic variable, some people need less). If you are a lucky type like me who never gets bitch tits then you will still need Nolvadex towards the end of your cycle and for pct along w/ Clomid to fully restore your hpta.
You can see that doing gear is not a simple matter, and many fail to understand that fact. That is why Sworders' concerns are valid. Also, you need to spend as much time off as on.....until the day comes when you cannot get your system to produce natty test and you go on hrt for good.