"One of the coolest things is genetically tailored diet and training. It won’t be perfect because we still don’t know what most genes do. But exercise genetics will potentially produce some of the most widely used and effective medicine. You may be able to tell people how they can train to get a certain health benefit instead of taking a drug, or maybe that they can’t get that benefit with training so they do need a medication. Also, injury predisposition genes are coming online right now. It would be nice to know more than just through straight trial and error what’s the best training for your and how you can avoid injury."
This.