In a recent study published in the Annals of Internal Medicine, Boston Medical Center researchers found that yoga classes specifically designed for chronic lower back pain (my italics!) helped patients feel better. In light of this those with non-specific Lower Back Pain might also be interested in this podcast which features Stuart McGill (regarded as the God of Lower Back Pain) discussing yoga and lower back pain
New research has shown that just an hour a week of resistance exercise can lower the risk of metabolic syndrome (cardiovascular risk factors such as overweight, high blood pressure and elevated blood sugar).
You don't have to leave your house to benefit either, bodyweight exercises or a resistance band will do the trick. Keep it simple.