I'm not trying to be the bearer of bad news,but halo is not something for a first time guy to experiment with. I know i was a moron and was being led around by the nose on a cycle by a gym buddy who swore that a gram of test/week and 40mg of halo ed would be fine. The G of test,no problem. The 40mg of test was uncomfortable for about a week,then resulted in nosebleeds and headaches,at which point i dumped them. Definitely not something i would have done if i had it to go back and do over again. 10mg i bet might be ok,but it sure seems like the risk to reward ratio is a bit out of whack with halo.