6'3" 195 probably in your 20's?
Your BMR is about 2100 cals/day. That's if you do NOTHING, take into account gym time, work, energy spent on digesting food, poundin the old lady, you need 3500 cals a day easy just to maintain.
Remember: 3500 calorie deficit/surplus = 1 pound
You wanna gain, eat more