Whatever you may think about Joe Rogan, he gives a good description of Transcendental Meditation (TM) here.

Regarding the title, the TM organisation is in fact a cult, but this just applies to a tiny percentage of fanatics at its core.  The TM meditation technique is pure gold and millions of people find it a rock solid quality of life enhancer.

https://www.youtube.com/watch?v=P4DGa0cNw-0