On Christmas Eve, a surfer from Santa Cruz rode a wave at Mavericks that witnesses say was over 100 feet tall, which would set a world record. But how do you reliably measure a wave?
The Post spoke to four of the New Yorkers, like Brooklyn fitness trainer Austin Head, who've earned Guinness WorldRecords. Insatgram @austin_head The Big Apple is home to an eye-popping 436 ...