If he shifted position frequently his muscles didn't protest too badly.

After a long time he stood up, every muscle protesting.

Old bones and ancient muscles protested, but she ignored them.

Every muscle protested, making him feel a hundred years old.

Every muscle in her body protested when she crossed into her own office.

Her muscles protested as she forced them into one last effort to lift him on to the bed.

She leaned back and tried to stretch, but her muscles protested.

As he did so, the strained muscles in her legs protested.

Her muscles protested at the savage impact as she beat him off and retreated.

Strained muscles and joints protested; she caught her breath, then moved again.