Then, just as suddenly, the muscles in her face and arms relaxed a little.

Just as quickly, the muscles in her face relaxed again.

At the sound of his voice, she felt her muscles relax.

His muscles relaxed, and he appeared to fall into a deep, natural sleep.

He smiled, and she felt each individual muscle in her body relax.

I'm the one you don't have to defend yourself against, so just let those muscles relax.

Your muscles relax in death, or so the wise would say, but I know better.

He made his muscles relax, and forced himself to speak naturally.

Under the effects of the powerful drug his controlled muscles had relaxed, lost control.

He could feel his arm and back muscles relaxing as they warmed.