How to stretch lower back?

I think i have stretch marks on my lower back!?How do i get rid of it!?

• And im not fat, im not ridiculously skinny, theres a bit of meat on my lower back but not enough that i can grab it.

• Answer:

  I tried everything except laser because of $700 tag per treatment. Finally I opted for microdermabrasion that's also expensive if done professionally, but I found the way to do it myself at home. I created my own microdermabrasion paste using shea butter, vitamin e oil and medical crystals which don't need machine. I scrubbed with this paste stretch marks every time I took a shower for the whole last month and they reduced in size 50% (I measured couple with ruler) so I'm pretty satisfied with results. You can put almost anything that you already use on your skin to create this paste as long as you get right microdermabrasion crystals, just google medical crystals to see how it works.