140LBs and 3500 Cal
Based on information I found mostly here on this forum, I've calculated my basic metabolic rate, taking into account my level of daily activity, to be around 2500 calories. I am only 140lbs, 5'10", and 21 years old. Because I am trying to add 2lbs per week of muscle, I've just begun a 3500 calorie diet. I'm going for very high protein and low fat - 450g protein, 250g carb, 75g fat per day. Let's put that into perspective:
If I were to eat my daily intake of protein all in ground beef, I'd be eating almost 5lbs a day. But I'd get twice my daily fat intake and be 250g short on carb. This is for 93/7 ground beef.
If all in boneless skinless chicken breasts, it'd take 35 of them to get my daily protein intake. I'd have taken in about the right amount of fat and I'd still need a lot of carb.
If I got it from whey protein drinks containing 1g carb, 1.5g fat, and 23g protein per serving (the specs of the vanilla stuff Wal Mart sells, which tastes like shit but has good nutritional specs), I would have to drink almost 20 of them a day. Then I would still have to get most of my fat and carb still on top of that.
However, I live in the middle of nowhere on a farm, and I do labor-intensive work all day. This is a shitload of protein for someone my size, and the calorie intake requires much more effort than you would think if I want it in the right proportions. Sure, I could get my calorie intake fairly easily from eating high-carb or fat foods (pretty much everything that's not tuna, ultra lean ground beef, protein powder, etc.) but that would not be converted to high quality solid muscle very well.
Eating to bulk is expensive. I'm a newb to this all, but I've studied a lot the past few days, and this is what I've found out. You need to keep a journal to check your intake, or you're probably not getting sufficient calories to meet your goals, or you're getting calories from the wrong sources—or both. If someone says they're on a 5000 calorie diet (unless half of those calories come from fat), ask to see their journal. If they're not rich enough to spend $10-$15 a day on food alone, they're probably full of shit.