I overheard people in the gym say they didn't even know what "that thing" was until they saw Josh and I use it. This is not uncommon since I've only seen this machine in one other gym; ever.
Machine sissy squats
This is a sissy squat machine. Sissy squats are oftenperformed standing, but there is an actual apparatus for the exercise, as well. However, not many gyms have them, or they're in an obscure place. If you want to use one ask the gym owner, or a seasoned personal trainer, so you don't wander the floor needlessly.
Use your best judgement
This exercise can be done upright, or with a backward lean, but I'm angled forward. For me, the first position causes knee pain. Please use your best judgement.