Fatigue settled over him the moment he allowed his muscles to relax.

These rests are important because they allow your muscles to rebuild the depleted energy stores used up during the intense phases.

He sat himself carefully in the oversize antique oak rocking chair, and allowed his muscles to relax.

Orlando squirmed, trying to find a position that would allow his back muscles to unkink.

It gets more oxygen to your muscles, which allows your muscles to work longer.

It allowed my muscles to heal and grow normally with exercise.

At last, he was able to grip the body of the horse with his legs, allowing his muscles to support their weight.

That, in turn, lowers circulation, which causes discomfort, and allows your muscles to stiffen.

This easier surface allowed Linden's muscles to grow accustomed to movement.

The added time allows their muscles to develop more fully, and hence their flavor.