For your supplements it really depends on how much you have to spend. You need a multivitamin, protein powder and a pre workout drink. You shouldn’t really be touching anything other than this at 15.
If you have spare cash then:
Protein = BSN Syntha 6
Multivitamin = animal pak
Preworkout = usp jacked
If you don’t then:
Protein = ON 100% whey
Multivitamin = now sports male vitamin
Pre workout = id still get usp jacked
Food
I use protein scoopers to measure things, you get them in nearly every type of protein available. You will need to get some Tupperware and pre cook your chicken for the next day and take it with you. With every meal you need protein, preferably in the form of a fist sized lump of meat. Of course your times will be different to mine, this is what i do though.
What to eat when to eat:
Meal 1 7am: breakfast – 5 scoops natural yogurt, 1 scoop oats, 1 banana, handful of cranberries and raisins.
Take your multivitamin now
Meal 2 11am: 1 or 2 chicken breasts and rice. Brown rice preferably though microwave rice is fine if you are on the go
Meal 3 1.30pm: 1 chicken breast, 1 scoop of oats
Meal 4 4.30pm: This is my main dinner, im guessing you live at home so just eat whatever you are given. Preferably you want something along the lines of steak, sweet potato and broccoli
6pm have your usp jacked
6.30 go lift heavy weights. Its about intensity not about how long you are there. You should be able to get a good workout in under an hour. Any longer than that is detrimental to putting on mass
Meal 5 8pm have your protein shake
Meal 6 10.30pm cottage cheese and crackers