Hello everyone, I need advice on gaining weight, im only 16 but i have basic training in September. Whilst at selection the doctor said to me that my BMI is quite low, and i would need to gain a bit of weight before i start. I weight 8 and half stone, im about 5"8. My problem is i can eat so much and not gain any weight, And when i do gradually increase i seem to lose it when training for basic. Are the protein/weight shakes any good? Should i cut down my training? Any sensible suggestions please as i need to put on atleast a stone id say before i start. Thanks in advance.