We will soon begin to find out!: http://www.bbc.co.uk/news/technology-26766095

I have the same idea, how are we going to push the human race to new limits without some pioneers who are willing to exceed our mortal boundaries with the help of science.

This was tried in 1988 - http://www.nbc.com/saturday-night-live/video/update-all-drug...

Read up on Todd Marinovich before you ask that question.