To a man, they were moving on the balls of their feet.

"We were on the balls of our feet and moving forward."

He seemed to be walking on the balls of his feet.

He began to move, spinning quickly on the ball of his right foot.

See how she walks on the balls of her feet.

James moved toward the Other, rising a little on the balls of his feet.

The balls of his feet were pressed to the floor.

The guard rose on the balls of his feet and looked over.

He stood up and seemed to roll on the balls of his feet.

It may feel like a small lump inside the ball of your foot.