One of my regular clients asked me about a cue I use on the reg . . . a little squish in the knees. The forward fold is the go-to yoga pose and possibly the easiest, most complex pose of the bunch. Forward folding is the neutral gear of the yoga canon. Done well, it releases hamstring tension, lower back tightness, and on perfect days, I can feel my entire spine crack up the line.   Indeed, I cue it over and over and over. It might be the first time or the hundredth time, but eventually, one of my clients approaches me and asks for clarification.  …