If you suffer from low back pain, you're in some serious company — it's estimated that up to 80 million Americans experience lower back pain each year. But for how common it is, low back pain can be a tricky fix. Most of the time, your back itself isn't the issue, it's simply the bearing the load of other injuries or muscular tightness. It's always best to talk to your doctor or physical therapist about chronic pain or injury, but if you've got the greenlight to exercise and stretch as normal, here's how using a foam roller can help ease some of your aches and pains.