Idiom:

Pull out all the stops ( try one's best )

Hit the book:

Suck

Skinny

Creature

Starved

Whereas

Scour

Motivate

Tummy

No laughing matter

Trophy

Rigorous

Skinny people, those who seem to eat tons yet never gain weight, are probably the luckiest creatures in the whole world. Imagine eating whatever you want, without even bothering to exercise, yet having the body of a starved mode.