That is intense. I've never tried that one. -220 degrees could be too much for me, even for 3 minutes. I'm freezing just thinking about it. My go to of late has been hydrotherapy. It is tranquil but intense in the way that you are in a pitch black box with it a lid on it, floating in water. When I'm not up for a session or it's not in the budget, it is a good fix.
