What Causes Runner's High?
An emerging field of neuroscience indicates that the endocannabinoid system may be more responsible for feelings of euphoria after exercise than endorphins.
For decades, endorphins have hogged the credit for producing "runner's high," that fleeting sense of euphoria and calm that many people report experiencing after prolonged exercise. Who among us, after an especially satisfying workout, hasn't thought, "ah, my endorphins are kicking in." Endorphins are the world’s sole celebrity peptide. ... Finding endorphins in the bloodstream after exercise could not, however, constitute proof that the substance was having an effect on the mind. So researchers started to look for other candidates to help explain runner’s high.
Giving our solar system a "slap in the face."
- A stream of galactic debris is hurtling at us, pulling dark matter along with it
- It's traveling so quickly it's been described as a hurricane of dark matter
- Scientists are excited to set their particle detectors at the onslffaught
The climate change we're witnessing is more dramatic than we might think.
A lazy buzz phrase – 'Is this the new normal?' – has been doing the rounds as extreme climate events have been piling up over the past year. To which the riposte should be: it's worse than that – we're on the road to even more frequent, more extreme events than we saw this year.
Once again, our circadian rhythm points the way.
- Seven individuals were locked inside a windowless, internetless room for 37 days.
- While at rest, they burned 130 more calories at 5 p.m. than at 5 a.m.
- Morning time again shown not to be the best time to eat.
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