Yogi is a spiritual/religious term for a yoga master— someone who's mastered all poses, can hold them indefinitely (read: in amazing shape), controls their body and mind at will, have been progressing for at least ~10 years  and generally tend to be ridiculously wise people. It's a term closely tied to Hindu philosophy. Almost (but not quite) what a "saint" is to Christianity. In short: these superfupers have no fucking idea what they're talking about; by definition, they cannot be yogis. Leave it to fats to ruin/butcher everything they get involved in.