Take a warmer when traveling. That is when you are more apt to have a pulled muscle due to lifting travel bags, putting items overhead on an airplane, and carrying them through long airport terminals. Sleeping in different beds and riding in rental cars can also make backs uncomfortable. Traveling can find you stressed about meeting flights, finding your way in an unfamiliar area, and generally being out of your element. A heating pad will relax tight muscles and may help you relax and get a good night's sleep.