There are several natural options available when looking for ways to treat costochondritis. The first is rest. When you experience an onset of symptoms, it's important to take a break from activities that require heavy lifting or repetitive push and pull motions. This allows time for your body to heal itself without further aggravating the inflamed rib cartilage. Gentle stretching exercises can also be beneficial; they loosen up stiff muscles and reduce pain associated with costochondritis.