Those who would like only to ?fit? their penis, I mean only add something extra to it, a half of an inch or something like that, but not making it dramatically large; it won't be too long of course. For that regular exercises needed, about three times every week, and not less than twenty minutes. I'm sure that in thirty days you'll be satisfied with the results. For some lucky men, this time can be even less. Especially for those, whose fellow is favorable for changes.
Now let's speak about adding more to your gain. You have to be ready to train more, but do not think it will take all your free time. No, you only have to be exact, not skip trainings and the result will be already seen in some months. It the guy don't worry about the time, he can only do the exercises regularly. One more thing: if he doesn't want to change the size dramatically. But if he worries, so, three or four times a week is for him. Do trainings about an hour and you'll be excited yourself.
So my last number is working about an hour. But everything is done to promote the process. Before and after doing exercises every time put a warm close to your gain. It is needed not to injure the penis and also to quick the process of increasing. All the exercises are done with your hands, so you have to be carefully with your manhood, not to do worse.