He became a burden to the team.

He is a drag on the team.

I'm so busy with work, I could use all the help I can get.

He was so relaxed that his hands were behind his back.

He worked as a rear gunner in a fighter plane.

This problem is difficult, and I give up.

This handover is our new project.

He goes to the gym every day to train his brachioradialis muscle.

He is doing a special exercise to strengthen his sternohyoid muscle.

The mylohyoid muscle plays an important role in opening the mouth.