The magic of external Yoga practice

When someone from the outside sees a practice of a yogi, he has the sensation of witnessing something profound, ancient and magical, only when the movements are slow and centered with a breath of a minimum of 7/8 seconds up to 15/20 for every vinyasa this magic can happen, for the rest when the transitions take just a few seconds, this reflects only an external practice without any internal awareness, as Sri K. Pattabhi Jois used to say: “Yoga is an internal practice, everything else it’s a circus / gymnastics “.
So how do you recognize if someone who teaches us reflects this concept? Very simple count the seconds that take to make every single transition, if they are only a handful of seconds you already know the answer!