Keeping strong hamstrings helps ENORMOUSLY in balancing the pelvis in order to take the pressure off the lower back! What strong hamstrings do is balance the pelvis where weak hamstrings lead to the tight hip flexors shortening, without the balance and stability, and ultimately correct posture.
So, there are a few simple exercises we love that can help greatly in keeping the hamstrongs strong and help keep lower back pain away.
Check out this video for a quick look at a couple you can do at home that are REALLY effective at activating the hamstrings! Warning, you should stretch to warm up and afterwards!