I was watching a SciFi tv show where large objects had an outer speed limit of 18000 kph and that got me wondering what things in everyday life are faster than even 500 kph.
I know bullets can be fast, but they are not exactly everyday life (at least in my life).
I included mass for obvious relativistic reasons.
Adrenaline is released from the adrenal glands near the kidneys. From there, it first has to flow back to the heart, through the lungs, then back to the heart, and only then to the brain and the rest of the body. One full loop of your circulation takes about a minute at rest, and half a minute when your heart is really pumping, so lets take at least 20 seconds.
Yes but you haven’t heard this guy’s mother saying it in her native accent. It really gets the blood flowing.