Q: I'm 5ft. 9ins. tall, a medium frame, 19yr old male and weighing in at 150lbs. what calorie intake would be good for my size frame?

A: Use my Fitness Guide to get an idea of what your diet should look like (calorie totals are at the bottom). It will suggest different diet and calorie level depending your goal -- bulking up or maintaining present weight (there's also an option to lose fat but you probably don't need that at your height and weight). The suggested diet will be high in protein -- don't worry if you can't get that much protein into your diet. If you can get about 1 gram of protein per pound of bodyweight daily (so 150 grams of protein daily in your case), that's enough.