The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
Everybody I know can sit on the floor on their knees with their butt resting on their ankles. I can barely get the tops of my feet to touch the floor. And can only lean back slightly before it feels like my knees will pop off. Tight in my quads? Shins? Abdominals? all of the above?
Ankle, quad, IT band are good places to start.