In my south Indian Hindu culture, there is an ancient prayer that we do before Lord Ganesh where we hold our earlobes and repeatedly crouch down and get up.
As well, my dad used to tell me that it was also given as a punishment in school in Sri Lanka!
It has now been shown that this exercise actually improves brain function, and has been re-packaged as Superbrain Yoga.
Some of its many benefits are improved memory, and increased ability to handle stress. It has even been shown to help learning-disabled children increase their mental abilities.
To learn how to do it, click here.
Ideally, this exercise should be done daily, for at least a couple of weeks, before any tangible results are seen.
Personally, I haven't been doing this consistently enough to see any improvement yet. I guess I must be more disciplined in my practice!
Click here for a video about Superbrain Yoga.