This style of lunge is actually slightly better than the forward lunge when it comes to building muscle, partly because it's harder to compensate with the lower back, so your form is better.
If your goal is to build your quads, this reverse lunging style also beats the forward lunge, which is better for glutes and hamstrings.
I've titled this article TNT (Tips-n-Tricks) for a very good reason. Many times it's the small things that make the biggest difference. Usually when reading a new book or article you walk away with one good idea. This one idea could've been presented in a paragraph or two. So I got to thinking, why not just provide all those great ideas in a format that cuts out the BS? What you're left with is pure TNT, the stuff great explosions are made of.
Break out of your training rut and build some new biceps mass with the drag curl! It's not easy, you'll look like a gimp doing it, and you'll have to use sissy resistance. What more could you ask for in an exercise?