According to the ancient Chinese tradition, jujube was used to cure insomnia. The entire fruit including the seeds are filled with antioxidant phytochemicals, polysaccharides, flavonoids, saponins, which are considered to have sedative qualities. This fruit helps in inducing sleep by calming your nerves.

养肝，宁心，安神，敛汗。治虚烦不眠，惊悸怔忡，烦渴，虚汗。 [1]
①《本经》：主心腹寒热，邪结气聚，四肢酸疼，湿痹。
②《别录》：主烦心不得眠，脐上下痛，血转久泄，虚汗烦渴，补中，益肝气，坚筋骨，助阴气，令人肥健。
③《药性论》：主筋骨风，炒末作汤服之。
④《本草拾遗》：睡多生使，不得睡炒熟。
⑤王好古：治胆虚不眠，寒也，炒服；治胆实多睡，热也，生用。
⑥《本草汇言》：敛气安神，荣筋养髓，和胃运脾。
⑦《本草再新》：平肝理气，润肺养阴，温中利湿，敛气止汗，益志定呵，聪耳明目。