This is a very old traditional exercise which was lately tested scientifically and amazing results were found…………….always believe tradition
Try to do daily this exercise for sure now you are home-bound ……do it together with your children. They will like it. https://www.youtube.com/watch?v=rh-44RFwhe8
Other version/explanation:
https://www.youtube.com/watch?v=kGPrCZ3-jRU

SUPER BRAIN YOGA https://www.youtube.com/watch?v=KSwhpF9iJSs