Does anyone know of any good protein shakes i can take for my firefighter training?

I’ll be training for the exam this year and i was interested in drinking protein shakes. now i know there are alot of different brands and what not with different effects i guess. i dont want one that will add alot of weight to me becuase if i get lazy then i dont want to get fat. i want one that will increase my endurance and energy. increasing my bulk slightly.

i plan on going to the gym about 4 times a week. and working out at home daily. especially my legs.