Which of these has not been an Olympic sport?

   Solo synchronized swimming
   Roller Hockey

Swimming burns more calories than

   Walking and Running
   Walking, Running and Cycling

The fastest ever tennis serve was recorded at

   163.4 mph
   Mach 1 – resulting in a sonic boom
   155.6 mph

Your body contains enough iron to make

   A nail one inch long
   A nail three inches long
   A set of golf clubs

At 117 years old, the oldest person in the world lives in

   An Igloo