In just a few words, “PCT” is the period of time you take after a cycle of steroids, to allow your body a chance to normalize its natural production of testosterone and other hormones. The purpose of PCT is to keep your gains after a cycle. The time you’ll need to spend on PCT will vary depending on a few factors, these being the steroid(s) you used, the dose of the steroid, and your individual sensitivity.
When you finish your cycle, your body will still be producing less testosterone than normal, but your natural testosterone production will not be at zero. When you added steroids to your system it suppressed your natural testosterone production, but when you stop using the drugs, your body will start to make more testosterone in an attempt to bring your levels back in line with what is normal in your body.
When your body is in the post-cycle state, it will tend to produce more testosterone than normal. This can be very good in that it gives you a chance to recover some of your natural testosterone production that would not have otherwise been possible. But the flip side of this coin is that your body may not return to normal levels. It’s not unusual for it to take 6 months or more, to return to normal levels. This is why it is so important to implement a proper PCT program after you stop using steroids.