In the ultramarathon world, there is increasing attention being paid to PEDs. A lot of that focus is not on the physical benefits of the drugs, though that is important, but the focus is also on the mental benefits. That is, drugs that lower anxiety and/or increase focus can have greater benefits in a race that might last 20 hours. So, in my world, being physically able to run 50 or 100 miles is just table stakes. It's the mental game that makes the difference in whether you cross the finish line or not.
