To get Indian cirizenship, you must prove to the inmigration authorities that you can bob your heads with a frequency of at least 145 BPM (Bobs-per-minute).
>>512601868 (OP)
Technically you are always bobbing your head when your heart performs one beat. So just raising your heart frequency above 145 (not hard) would be enough.
>>512602050
To qualify for inmigration in India, government officials will only count a head-bob as acceptable if it bobs at least 23° to one side. They have special equipment to measure this
