Because they are Kath ;) But some of us are not so young. Turning the IK chains off for the legs helps allot sometime when posing. At the bottom of the display you will see two menus, select the figure your posing and then select the body. Then on the top bar click on Windows and from that menu select Hierarchy Editor. A Pop up window will appear, scroll down it to find the legs and click on the boxes next to right leg and left leg. That will turn off the IK chains for the legs. Then close that pop up. Now you will be able to work the legs the same as the arms, another words when you select the thigh on the figure and move the Bend dial, it will bend the thigh up or down. Unlike before where you had to move the foot to do it. It works better in some cases. You can also do the opposite for the hands if you want to move the hand and have the arm follow.