What causes muscle soreness following strenuous exercise?
Since the early 20th century, this specific type of muscle soreness, called “delayed onset muscle soreness” (DOMS), was thought to be caused by lactic acid buildup in the muscles during strenuous workouts where your body’s oxygen supply is depleted.
Where did the word cookies come from?
The word “cookie” comes from the Dutch “koekjes” which came from the Dutch “koek”, meaning “cake”; cookie was introduced to English in the very early 18th century. It is thought this term caught on more in the United States due to the strong Dutch heritage in early America.
Is it possible to fire a gun in space?
Fires can’t burn in the oxygen-free vacuum of space, but guns can shoot. Modern ammunition contains its own oxidizer, a chemical that will trigger the explosion of gunpowder, and thus the firing of a bullet, wherever you are in the universe. No atmospheric oxygen required.Can trees explode from freezing?
Cold weather will cause some trees to explode by freezing the sap, because it contains water, which expands as it freezes, creating a sound like a gunshot. The sound is produced as the tree bark splits, with the wood contracting as the sap expands.
Stephanie - 7 years ago
Note: Beware of exploding trees this winter