So there is someone quite popular in India. He is teaching and using words that are illogical
He talks about negative prana energy
He talks about sleeping is close to death so avoid it
He talks about death as inertia
Many many people follow and believe him
Few can grasp reality of pure consciousness
There is nothing new to add to traditional Yoga talked about by Patanjali
Yes the understanding can be much more
Someone asked his Guru how far have I Progressed ( he had read all shastras etc and was practicing yoga and pranayama etc for more than a decade)
Guru simply replied you have not even started
All people want is the ego of being called a yogi. Or being advanced. Or think they know it all. Satisfied in their practice
Want God. Keep practicing till you have him