 [ Symptoms ] how should my 15 year old son 511 220 lbs be eating particularly before his football games and lacrosse games [ Disease ] overall weight will depend on his position on the field if he has hoped to be on the o line then he may be small if he is a quarterback he may be perfect overall he needs an adequate balance of protein carbs and fat in his diet carb loading i typically reserve more for the endurance athletes but keeping properly fueled up is very important i think in the end good common sense is key he is a big kid and obviously very active he needs to eat a lot to keep up and this should be a well balanced diet he should also be very aware of keeping well hydrated but not just water loading the day of a game i am sure there are college demographics for typical size for each position on the field but at 15 the most important factor is enough of all of the vitamins minerals and protein that his body requires to stay healthy and fit