Curling stones used in the Olympic sport of curling are made from granite.
Astronaut Alan Shepard played golf on the Moon after he smuggled a golf ball and club on to the NASA Apollo 14 mission to the Moon in 1971.
Anaerobic exercise refers to high intensity activities over a short duration (e.g. sprinting) while aerobic exercise refers to physical activity performed at a moderate level over longer periods of time (e.g. jogging).
Regular exercise helps boost the immune system.
The string tension of most tennis racquets is around 50 to 70 pounds (220 to 310 newtons). With lower tension a tennis racquet produces less control and more power while higher tension produces more control and less power.
The fastest recorded tennis serves are over 155 mph (250 kph).
Regulation Major League baseballs feature exactly 108 stitches.
Snowboarders and ice skaters glide on a thin layer of water as their skates and boards heat the snow beneath them.
Modern swimwear has developed to the point where the fabric and designs are actually faster through the water than human skin. Controversial neck to ankle suits have been one of the reasons behind the consistent breaking of world record times since they were introduced around the year 2000.
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