Vrikshasana

Vriksha means tree.  When you do this exercise the body takes the shape of a tree. 

Method: Stand straight and take the right leg on the left as shown in the diagram. The base of the right leg should rest on the left thigh.  Raise both the hands up and join them. Stand in the this position for 30 seconds
to 1 minute and come back to the normal position.  Do the same procedure with the left leg also.

Benefits:  This helps to improve concentration and to reduce joind pain.