This session is mostly drills to bring relief to our abused wrists/elbows/shoulders, from over-use of electronic gadgets. These actions are good by themselves, and also good preparation for asanas where wrist/ elbow/shoulder strength is called for.
wrists and ankles are the small joints at the extremities: . They have the strength to take the weight of the whole body, sensitivity to give us feedback about subtle changes in placement, and can give precise direction to our efforts.
Can be attempted by all levels. Those with any shoulder/ wrist weakness or general debility/ elderly people can choose to stay off those positions that put too much weight on their shoulders or wrists.