He could not be much older than fifty yet already his body had betrayed him.

Where his body had once betrayed him, he now had control over it.

He felt as though his body had betrayed him.

His body had never betrayed him like this before.

She could not see his face, but his body betrayed him.

How could his body betray him thus when all he should be thinking about was escape?

I wanted desperately to move, to lift a hand to my cheek, but the body betrayed me.

It was as if his body were actively betraying him.

Tonight, on top of everything else, her own body had betrayed her.

Whether she said the words or not, her body had already betrayed her.