He says the key is strong muscles and you can get them sitting at your desk.

Finally, the whole process is pushed along by a complex group of strong muscles.

It was making her own beat faster against the strong muscles of his back.

Weight training also is important to keep muscle strong when on a diet to drop fat.

The knee, then the still strong muscles of the thighs.

But did you know that strong muscles burn more calories?

It didn't encourage children to develop strong muscles, or adults to keep them.

She held and pushed with the strong lower abdominal muscles.

The stranger was a young man, with square shoulders and strong muscles.

Despite what people say, the tongue isn't your body's strongest muscle.