Calories in, calories out. I know this because I struggle to gain weight, quite the opposite problem most folk have.

If I eat over 3k calories, I gain weight. If I eat less than 3k, I lose it.

Not tracking my calories and quitting my workouts due to wisdom teeth extraction and a nasty sinus infection turned chronic has cost me 20lbs.

20lbs I worked very, very hard to gain. Consuming half a gallon of whole milk a day, forcing myself to eat even when I had no appetite, etc. Working out. I felt great and looked better than I had in awhile. All gone now, back to square one.

My goal is to get over this sinus infection, (black plague, whatever it is) continue counting calories, as well as exercising, to put that weight back on and then some.