How to bulk up (put on some weight/muscle) in a healthy way for sports season...?

It is easier to turn fat into muscle so I understand why you want to gain some weight. What may be something that you are doing that you aren't noticing is eating about 5-7 snacks a day. Like eat every two hours just a little something- if you are doing this it makes your metabolism faster, try cutting that down to just 3 or 4 MEALS a day, if you really are in desperate need of gaining weight. Also when working out try using "overload" this means you take your excecising to the next level. Don't just the same old push ups everyday try doing a harder variation. Good Luck! (: