Xenon and Argon doping are officially banned by WADA. So while obviously you will get away with it if you aren't one of the top athletes on the planet, you will

Xenon and Argon doping are officially banned by WADA. So while obviously you will get away with it if you aren't one of the top athletes on the planet, you will technically be cheating if you breathe Xenon then run in the San Francisco Marathon.