I've been trolling for years, picking up tips and looking for some inspiration. Q: Is it possible to put on muscle mass while in a caloric deficit? And after much searching the net and asking broly friends, the consensus on my question is 50/50. I lift and do interval-based cardio, and I'm in a caloric deficit. I've noticed changes in the mirror (e.g. 'Wow, I never thought I'd see that muscle'), but I can't tell if its because said muscle is larger in mass or because I have less bodyfat. I'm fully expecting a read the stickies, stickitinyourassn00b, but I love that shit.