One big thing exercise does is it raises your levels of brain derived neurotrophic factor — BDNF.

锻炼的一个很大的作用就是，它能提高你脑源性神经营养因子的水平。

And this happens through a protein that's produced in the brain called BDNF, brain-derived neurotrophic factor.

这是通过大脑中产生的一种叫做 BDNF 的蛋白质实现的，这是大脑衍生的神经营养因子。

Protect yourself and your brain from stress, you release this protein known as BDNF, brain derived neurotrophic factor.

为了在这种压力下保护你自己及你的大脑, 你会释放出这种被称为BDNF的蛋白质, 大脑衍生出的神经营养因子。

He found that rats that exercise on a treadmill have raised levels of brain-derived neurotrophic factor coursing through their brains.

他发现，老鼠在滚笼里的运动提升了它们大脑中脑源性神经因子的水平。

It does this by promoting the production of a protein called brain-derived neurotrophic factor (or BDNF) , which in turn enables and improves a process called long-term potentiation.

这是通过促进一种叫做脑源性神经营养因子(BDNF)的蛋白质的产生来实现的，而这种蛋白质的产生反过来又促进了一种叫做长期增强的过程。