One of the best remedies to treat a backache is to rest. Lying down flat on your bed with a pillow under your neck and having a good night's sleep can do wonders for a sore back. Apply an ice pack to the sore area. A warm compress on the affected area will also help ease the pain. Stretching your back muscles by lying down flat on your back and bringing up both your knees to your chest is another excellent way to stretch the back muscles and make your back stronger. Every time you lift something, be to bend your knees first - this prevents your lower back from getting tense and causing damage to your spine and back muscles.