Neurogenesis is the generation, or creation of new neurons. As recently as 15 years ago we still believed that a person starts out with a certain number of “brain cells” and that’s all one got—use them, lose them, burn them, fry them; if you run out then you’re done. Now we’re seeing that specific activity can actually grow new neurons. Yes, we can grow them ourselves! Through “vigorous aerobic exercise” we can trigger neurogenesis. In fact, that’s the only activity we know about so far that does so.
Now consider this: We quite literally have the power to create new neurons, stronger more developed brains, by choosing to do an action. Theoretically, we can actually use our wills to promote evolution in our species. “Evolution” and “human species” and generations too much for you right now? Well, there's still really good news. The research shows that there are even immediate and short-term benefits to going for a 30-minute jog just once. One time.
So, go for a run. If it’s not or can't be running for you, find yourself another vigorous aerobic activity—swimming laps, tennis, dance, water aerobics, cycling, wheelchair basketball, jumping rope, triathlon, farming land, hiking/backpacking--and happy growing!
Thank you science. Long live mystery! Take good care.