#1. Took about 20 minutes to put together. Only one step required a second set of hands. Brilliant design. This is the one I got for reference:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
#2. Very comfortable and easy to use and make adjustments based on your height. Freaky sensation being inverted. Actually comfortable after your brain gets use to housing 75% of your blood.
#3. Do not. I repeat, DO NOT. Again,
DO NOT!!!!! get up too fast. First, I nearly passed out, and then I was hit with a nasty bout of nausea. I still haven't fully recovered.