It can be seen in itihasa and puranas that our rishis has done tapas for a very long duration. Example: vishwamitra did tapas for 10,000years. Does he take any break in between to do Nitya karmas or since he is doing agora tapas Nitya karma anushtanam is not necessary for him? I am not ill-speaking about our rishis , this is a doubt which I had while listening to Swamy’s upanyasam. Kindly someone explain it.