Paul Saladino· MD
you could at the absolute lowest put a bunch of padding down for your knees in your house right now wear the grippiest shoes that you have and put your feet against the wall and no you wouldn't be able to do the full thing because there's not enough to hold your heels down but you would actually be able to feel those hamstrings working you'd push back up with your hands and you'd fight down a little bit that would actually be a really gentle way to start working on it