It sounds like great prep for ski season.
Yes, on my stairs. Not sure if the neighbours can hear me landing each hop.
I’ve chatted with the guy on Messenger. He has a PhD in exercise physiology. He had ACL replacement about 25 years ago and has arthritis in his knees. This is the program he follows but it is also designed for and sold to ski hills for their staff.
It seems really specific - great stuff!