kalden yungdrung wrote:
But in Bon is also a Tsalung Trulkor lineage and that differs great from Yantra Yoga (lineages). Yantra Yoga is what is done inside the tradition of Namkhai Norbu Rinpoche and seems to be based on hatha yoga mainly with counting.
Yantra is just a name. The name of Norbu Rinpoche's system is known in Tibetan as "Bairo Trulkhor". He chose to back translate the name into Sanskrit. There are many different systems of Yantra/Trulkhor in Tibet. Sakya Lamdre has one; Nyingma has many; Kagyu has the Trulkhor from Naropa. Gelugpas have one related to Vajrabhairava as well as Naropa's system. Then there is a specific tradition of Trulkhor associated with Kalacakra. Then there is Trulkhor associated with Shangpa Kagyu, I would imagine. They are all a little different, but have the same basic principle in mind i.e. freeing up knots and kinks of the body and removing disease.
They all have similarities, and they all have differences. Bairo Trulkhor is the one that most resembles Hatha Yoga overall. It is perhaps the oldest one we have, as well.
Further maintain we inside Bon Dzogchen, the famous 5 postures for Thodgal and they are not at all similar to the other yoga styles i (did) practice.
You asked about preparation, not main practice.