This intrigues me. I see it in Thailand a lot when I'm jogging in the morning. Asians (Thai, Chinese etc), do bugger-all jogging or HIT exercises - they just seem to stand in one spot and wave their arms around a lot.
Is this a secret cardio exercise?
Do Asians suffer from poor blood circulation in their hands?
Seriously, I cannot figure out any substantial benefit to waving your arms around......