Reasonable expectations?

[nukesapper]

So my question is what is an expected reasonable and healthy gain on a monthly basis. My goal is 1.5 inches gain in length. I expect girth to come along with it correct me if I'm wrong here. But it's a .1 inch growth a month something i can expect with this? I'm just wondering if my goal could be within a year and a half or not.

 

[oldandlively]

0.1in of growth is considered as optimal growth. So yes, if you can keep things consistent through all the months of journey, stick close with the routines and progressive perform your exercises using proper tools to maximize the traction loads, 1.5in in pure length is achievable.

But the moment your routines and discipline start to fluctuate, so will your gain. If you are a hard gained because you have prior PE in the past, but went too hard and developed hard tissues, your growth may be slower than usual.