Share: Title:Dr Duke teaches how to safely strengthen the spine Duration: 1:09 Plays: 32K views Published: 6 years ago Download MP3 Download MP4 Simillar Videos ▶️ 1:23 Dr Duke Treating Low Back Pain 32K views • 7 years ago ▶️ 0:39 Dr Duke Teaches How To Train The Transverse Abdominals 32K views • 6 years ago ▶️ 0:57 Dr Duke Performs Sample Stretch Techniques For The Hamstring & Piriformis 32K views • 6 years ago ▶️ 0:44 Perfect Posture Exercise 32K views • 1 year ago ▶️ 0:57 Dr Duke Demos Two Ways To Stretch The Hip Flexors & It-band 32K views • 6 years ago