<p>It's best to cycle it to prevent your body from adapting to it. There are a variety of ways of doing this and it all depends on your goals and how your body reacts. Here are some of the most popular ones:</p> <p>5 days on, 2 days off<br />1 month on, 1 week off<br />2 months on, 2 weeks off</p> <p>Again, the above are just examples used successfully by others. You may want to experiment and create your own "cycle".</p>