For you guys on T did your chest go down alot?

T doesn't usually do a whole lot as far as chest-size goes. What little it does do is just body fat redistribution. Personally, my chest size hasn't been impacted at all by T, really. In the little over a year I've been on T, I've gained a few pounds of muscle weight and belly pudge, but I haven't seen much change in the fat stores in my chest or hips. (Not that it makes much difference, since my chest is big enough that just losing the fatty parts wouldn't be enough to make my life easier.)

Nope not massively, they sort of became flatter and almost seemed to not be as long at the same time. It was weird but there was a difference to how I looked binding before and after T.

They didn't get smaller per se, they just got...softer and kinda saggy. But now I am able to bind with a sports bra which is much better.

After working out for a year, my binders got bigger, but I didn't need to bind as tightly because my body shape made them just look like pecs. After awhile, they don't really look like breasts anymore, just kind of sagging extra tissue from your pecs. If you check out Garramone's youtube video of before and after pics, you can see this on a lot of the more muscular guys.

Of course, these kind of effects are probably for guys size B and smaller.

I'm not sure what exactly happened but my chest isn't as dense, and now has extra skin. I wouldn't say that it's smaller, or that it's directly related to hormones.

I know I'm not on T yet, but coming off of my female hormones I was taking and letting my natural T rise to its regular levels, it was much easier to burn off my breast fat. Before stopping those pills my chest did NOT respond to weight loss. They've gotten much less firm as well. So I'm hoping T will help continue to give me those types of results.

Mine weren't huge to begin with, but they have most definitely shrank.  Mind you, it could be a combination of binding for many years AND T, but they aren't as large as they were pre-T.

I don't think mine have gotten any smaller but it's easier to bind now because they're not as dense as they were. By the time I have surgery next year they might look like cantaloupes in tube socks, lol. Nahh, it's not THAT bad and especially so considering I've been binding over a decade.

I think you might be asking if they shrink when you asked if they "go away". For the majority of guys they don't get smaller in size (although that would be nice). The T just makes them saggy and breaks down the tissue somewhat.

I've been good about taking weekly measurements since starting T. I'm 2.5 months on, and my chest is down 1.5", which is actually really noticeable.

If you take advantage of the T and workout, then they'll get smaller. If you don't, then they'll just get less dense and be easier to bind.

Mine has been a combination of losing weight and T. I never had large breasts anyways; around a B...

But losing 50 lbs plus being on T for two years has made them look more like man boobs than anything.

I can get away with just wearing a simple wife beater instead of a binder now.