Yeah, it's a fine line. I found one of those online calorie calculator things (which of course I know is essentially useless, since different people have different metabolisms) and it said that for even light physical activity, I should be taking in about 3 times the calories I'm capable of eating per day just to maintain my weight. And here I am trying to build muscle? :P

But exercising occasionally seems to remind my body that it needs calories and food is not the enemy, so I keep trying it.