K. Logash (19 years) from Kundrathur sets the Guinness world record for the most number of Jumping Jacks (21,420) in 12 hours. This event was held on Feb.10 (6am to 6pm) in the badminton court in Kundrathur with following all guinness rules and regulations. He got his name in Guinness World Record book.im.  
He is a professional athlete doing training from his 8 years. He is practicing for the record for the past 4 years more vigoursly. Previously also he held rewarded in Asia book and International book for most diomond pushups, he reached a count of about 54 up in 30 seconds.
He achieved the milestone even at the age of about 16, last year also he attempted the Guinnes world record for most jumping jack which was 12,000 counts which was broken by doing 21,420 counts in 12 hours. Logash is currently studying B.A. History in MCC College.
He is looking for sponsor for his next 24 hours guinness world record.
His contact number: 90806 78466.