I really rate stretching/yoga/flexibility exercises, for both Doms and subs but as a Dom a flexible sub is a thing of joy. In our little kink family stretching is a bit of a morning ritual. After breakfast either myself or our pup will lead us (including any guests) in 20-30 mins of exercises designed to keep us supple and adaptable. My personal priority is to make sure subs have flexible feet. Basically this means they should be able to sit back on their ankles with the tops of their feet flat on the floor and sit upright with a straight back. It allows for some of my favorite positions. These may look easy but really they aren't - unless you have done your footwork! The other thing is that subs should be able to bend their toes to 90 degrees, rest on the balls of their feet with their body weight on their ankles. The advantages of having a sub that can hold this position for a while are, I suspect, pretty obvious!
