Tennis ball heading - duration

According to Official Guinness Records,

The longest duration for heading a tennis ball is 1 hr 1 min and 2 sec and was achieved by Tomas Lundman (Sweden) at the Stockholm Stadium, Stockholm, Sweden, on 22 August 2006.

For a complete list of 2006 records, please visit 2006 Guinness Records in Sweden.

Other Sweden records that might interest you:

• Largest collection of paper dolls
• Largest ice cream boat
• Longest time controlling a football with the head
• Longest marathon parasailing
• Most pinky squeaks on a BMX