This is a bit intense but praxticrs like this have been used not only by the Buddhists but also the internet’s favourite emperor Marcus Aurelius for example. It seems to be really good for you. For a more feasible exercise just tape a square onto the floor and only leave that box for hygiene, work, food and walks. You sleep in the box you meditate in the box and you exercise in the box.
That’s really interesting. But ok I don’t want to insult anyone, but wasn’t Siddhartha Gautama only one of many many enlightened ones? And do you know if he didn’t endorse the entire bhavacakra or just the Bodhisattva?