I'm Warren Honeycutt, president of Get Honeycutt. What is the difference between a hex and a straight bar dead lift? Well, the obvious difference is the hex bar and the Olympic bar are two different bars. But the real reason that you do one or the other is the targeted muscles. The hex bar targets more with the quadriceps and the glutes. Typically, tow people can exercise with heavier weight. Proper technique is as follows: straight bar dead lift, bend at the knees, butt out, back straight, looking straight ahead, grab the bar, come up, roll the deltoids or the shoulders back, back down. Hex bar dead lift: step inside the hex bar, go down, come up, and back down. So, great, great movement. Both of 'em are great, depending on your goals, and again, the straight bar dead lift does activate more of the lower back. If you're having back pains, the hex bar is a great alternative for you. Hope this helps. I'm Warren Honeycutt, I'll see ya soon!