Best thing you do is a lot of stretching of those muscles. Depending on how
bad mine is hurting, I use anything from a couple Tylenol and some muscle rub
all the way up to a pain numbing patch along with a couple muscle relaxers.
One stretching exercise I do several times a day is not only very simple,
but it really helps the tendons that begin at the lower back and cross the
points of the hips.
Sit upright in a chair, and cross one leg over the other. If the right leg is
on top, then cup your hands around your right knee, and while gently pulling
it to the left you should also be pushing your torso gently to the right to bring
tension to the tendons. You'll feel it from your back all the way to your hips.
Other trick is, once you get those muscles back in shape try to keep them
in shape. Not always easy during winter months when it's cold and nasty
out, but doing exercises indoors will make the next trip a whole lot easier.