why we wake up at night to “pee” but not to “poop”?
It is so because the sophisticated, intelligent neuron in
your gut that control colon contractions, which push out waste, are also
influenced by your body’s circadian rhythm, the internal clock that wakes you
when it’s light out and makes you feel sleepy at night. So most people don’t
have the urge to empty their colon in the middle of night. But the bladder
which is like a reservoir for continuous flow of urine can stretch up to a
certain volume before you got to go. Normally you can sleep 6-8 hours without
having to urinate, but certain conditions like drinking much water before sleep
can wake
you up at night.
Why do we have fingerprints?
Many experts think that fingerprints help us to improve
grip, but researches have proved that fingerprint’s ridges actually make harder
to hold flat, smooth surfaces because they reduce the skin surface area.
Instead they think that our prints might help wick water off our fingertips or
allow our skin to stretch more easily. Other scientists have suggested that
fingerprints could improve sense of touch.
Why does armpit sweat smell worse than sweat from other
places?
Your body has two kinds of sweat glands. Most of those on
your arms and legs secrete a mix of water and salt. But the glands in your
armpits release an oily substance, which bacteria love. It’s actually the
bacteria eating the oil that releases the telltale stench.
Why do I sometimes get side stitched while running?
Your diaphragm get stretched, pulled, and pounded during a
run, which can cause that sharp pain in the lower edge of your rib cage,
usually on the right side of your body.
To help the pain past, slow down and take more controlled
and easy breaths.
Do feet really get bigger with age?
After years of wear and tear, tendons and ligaments in your
feet may weaken. This can cause arches to flatten, which means feet get wider
and longer. It won’t happen to everyone, though people who are overweight, who
get swollen feet or ankles, or who have certain medical conditions like
diabetes, are more prone.
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