Most of the energy from their food is used for growing.

We have to put a lot of energy into the game.

"We've spent a lot of time and energy trying to learn how to do these things right."

They can be used to change the form of energy.

We both bring a lot of energy to the job.

He had a lot of energy and was known for working very hard.

So does a kind of natural energy on the second floor.

The green was coming to the end of its energy, he knew.

I spent most of my energy getting ready to go out and party.

I let go of the energy and opened my eyes.