Long story short, I got a nasty concussion almost a year ago and lost all my newbie gains from 3 years of hard lifting. Now, I'm still cut because I eat healthy, but am much smaller because I still cant lift compound without my head wanting to explode. I basically do light calisthenics that I can tolerate, and swim at least 3 days a week to stay fit, and even that is a struggle. I'm working with Docs and trainers to try to get back to where I was, but I really have no clue how long its going to take.

Needless to say, this has been a huge hit on my confidence. I'm in college where most guys are in crazy shape so it fucking kills me not to be able to go hard in the gym like i used to.

Those of you who cant get huge, what do you do to supplement this?