Rén / zài / fàng sōng / hé / shuì mián / shí / fù jiāo gǎn shén jīng / tōng cháng / gèng jiā / huó yuè

人在放松和睡眠时，副交感神经通常更加活跃。

The parasympathetic nervous system is usually more active when people are relaxed or asleep.