Almost 2 months ago I opted to take a 23andme DNA test to check if I had MTHFR mutations which affected how absorbed vitamin B. (Wrote a blog post about it http://www.packofpacks.com/paleo-blog/planning-to-get-pregnant-a-little-knowledge-about-folic-acid-and-mthfr-mutations-could-help-you-and-your-unborn-baby)
Now my test results came back and there is a lot of stuff you can to do to find out more about yourself, like your ancestry and how to optimize your training, nutrition, supplementation.
I ran it through these 3rd party providers. The basic tests are free and already reveal a lot: