YOU SAID:

as that alone would cause him to lose hours upon hours of sleep at night.

INTO JAPANESE

それだけで、彼は夜に何時間も睡眠をとると数時間を失うことになります。

BACK INTO ENGLISH

That alone, he will sleep for hours at night and lose hours.

INTO JAPANESE

それだけで、彼は夜に何時間も眠り、数時間を失います。

BACK INTO ENGLISH

That alone, he sleeps for hours at night and loses hours.

INTO JAPANESE

それだけで、彼は夜に何時間も眠り、何時間も失います。

BACK INTO ENGLISH

That alone, he sleeps for hours at night and loses hours.