He gives strength to the weary
and increases the power of the weak.

Even youths grow tired and weary,
and young men stumble and fall;

but those who hope in the LORD
will renew their strength.
They will soar on wings like eagles;
they will run and not grow weary,
they will walk and not be faint.

(and they will study and not sleep ^^

- Isaiah 40 : 29-31