Powerman, you seem like a good guy so I am just going to get straight to the point here
When you introduce anavar into your system your body stops producing testosterone. If you are not adding it in from outside at that point you will cease to be fully male since you lack any amount of testosterone in your system.
Erection problems, mood issues and possibly depression can set in. All for what? 5 lbs of LBM that you might gain from anavar? consider your body will need to restart natural test production after thge cycle, some gains are always lost. What will your net gain be then 2lbs?
Give it more thought
Oh, sure. Anavar-only is a no-no! He will be dead within 10 days. LOL
I have quite a rich experience with Anavar and I can summarize it in several points:
1/ An 8-week Anavar cycle certainly isn't anything life-threatening. To the contrary, Anavar elevates mood, so you will rather feel better during the first weeks. The feelings may gradually disappear - similarly like the anabolic effect -, but I have never had any problems with an 8-week Anavar cycle. Why should I? Do you want to tell me that you will succumb to depressions, when watching your fast strength improvements? Or you can't survive several weeks without libido?
2/ 100 mg/day is too high a dose. I would stay at 60-80 mg/day. Your blood tests will be probably full of red numbers.
3/ The main health concern with Anavar are blood lipids. In contrast, liver values should be fine even at 80 mg/day. I wouldn't be so sure at 100 mg/day, though.
4/ Adding exogenous testosterone to Anavar will make the cycle more effective, but it will also further suppress your endogenous testosterone levels, which will complicate recovery during post cycle therapy (pct). Take into consideration, please, that
Anavar is otherwise a very mildly suppressive steroid (even people taking 80 mg/day for 12 weeks had only 67% suppression on average), so adding another stuff that will markedly suppress your testosterone production isn't the wisest idea in this world, if your primary concern is keeping gains (and/or low side effects). Note that people don't add testosterone to steroid cycles from sports reasons, but because they think that they must have sex everyday.
5/ Anavar is non-aromatizing steroid, which means that it promotes lean muscle gains without water. This sort of gains is characterized by a very slow increase of muscle size and its optical "hardening". So, you won't become huge overnight, but if you have low body fat (5-10%), you can look like a ripped Greek god after several cycles. At 20% body fat, however, you will barely notice any change in your appearance. An universal contribution that you should observe at any conditions will be solid strength gains.
Strength gains and the hardening of the body at nil side effects - these are the main reasons, why Anavar is so popular. Of course, discussion with people, who judge the steroid's effectiveness according to its ability to hold water in the body (and not by strength gains, which serve as a direct indication of real muscle gains) is practically meaningless.
6/ In order to create an effective PCT, you must measure your post-cycle testosterone values. Some people (like my friend) have no problems with recovery after Anavar, because testosterone suppression is very mild. In my case, however, it is much more difficult. My testosterone suppression is always nearly 100% and if I stop taking Anavar and start a PCT with anti-estrogens, I immediately crash and I am on my pre-cycle level within mere 10 days. Therefore, I "taper" the dosing of Anavar during PCT: I start at 10 mg/day and simultaneously I use anastrozole, 1 mg/day. I gradually go down with Anavar to 5 mg/day, and after 1 month, I use only anastrozole for additional 1 month. It is the easiest and most effective PCT that I can imagine.