I wanted to ask how I knew whether or not I should eat low end carbs or high end carbs or the low end protein or high end protein?
It says in there..if meat sit like a brick in your stomach or if you feel good eating meet 4 times a day...etc.
Then you have to listen to your body and if you choose a high carb set -up but it leaves you jittery or stuffed..then its wrong for you..switch to a middle of the road...if that leaves you hungry then you need more fat/protein...same thing the other way.
I never really write down the calorie intake in which I have should I began to do that?
You should find out how much you are ususally eating..then tweak it and PLAN a meal plan and eat by that to reach your goals
I go to school so it is difficult to eat chicken breast around 9 AM due to classes, thats why I take whey.
It is good that you get something..but t MRP would be better than whey...you ned more than protein to feed muscle!!! Protein by itself slows muscle growth.
For lunch I eat the school lunch, should I pack my own?
If you are just looking to be gaining, you can do either..if they don't feed enough then yes...keep in mind their food is not the best quality food!
One problem I had with the calculator thing was that Im unsure of my body fat %, I guessed I was around 10-15 so I just put 12.5%.
In the post is a link to a place you can estimate your BF with a tape measure..not as accurate as calipers but a start.
but should I load spegitti or try to get more fruits and veges instead?
Figure out what you eat now and the add to it to get what you need...don't beth "unfocused 16 year old" ...you can be smart about this and PLAN for success! Plan to succeed and you will.
As a 16 year old should I put into play the fact that my metabolism may be burning a lot more calories than that calculator suggested?
No!
It said I should get around 3500 calories, thus I should start writing what I eat down right?
You might do it in fitday for a few weeks until you "get" how to eat the right amount...and any time you start to drop off on the results...fix the diet. But bettter is to PLAN a diet to get what you need!!!
3500 seems high to me for you, you want to start with 500 over what you eat now and go a week, if you are not gaining add another 500...on 3500 I would think you might gain 2 pounds a week though.
So I should be able to gain 1-2 pounds a week I read, so if I dont make 1-2 pounds I can suggest that I need to critique my diet or my performance in the gym correct?
No! Just the diet!!!! Not the gym!
The only indicator of the gym needing a refresh as I explained in the link I gave...is if you are gaining weight but not muscle!