It's well known that physical exercise & challenging cognitive tasks can provide a boost of energy, independent of caloric intake. This phenomenon is due to the release of neuromodulators, such as dopamine & norepinephrine, in the brain, which are associated with reward & arousal
@elonmusk Sooo Question @elonmusk, when people are starting to settle on Mars, what is the first plant that is going to be planted on Mars?
I think it should be Hemp, just saying :) :D