While the ZMA will indeed be beneficial for your testosterone levels, and it will help with sleep, don't expect it to have the same sort of effects as ordinary testosterone. If you want to take a natty testosterone booster, better opt for HCGenerate ES - it has much more to it, and the ingredient list is spectacular. At first I was sceptical about it, but let me tell you that HCGenerate really leads to easily noticeable results. This is why it is my favorite natty test booster, and I take it all the time. It is especially awesome when combined with Proviron - makes you behave like a sex machine!