You become forgetful
Another effect of sleep deprivation is an inability to retain memories. "Insufficient sleep interferes with your ability to focus and learn efficiently, which is essential for you to remember something," Dr. Shane says.
"Research shows that sleep strengthens nerve connections involved in memory, and also helps consolidate new information into memories. Insufficient sleep interferes with this." Michael J. Breus, PhD, a clinical psychologist known as "The Sleep Doctor," explains that you need enough REM (rapid eye movement) sleep in order for your brain to solidify memories. "
“研究表明，睡眠能夠強化神經之間的鏈接，這點和記憶相關，所以睡眠有助於強化記住新知識，所以睡眠不足就會記不住。被譽為“睡眠醫生”的臨牀心理學家Michael J. Breus博士解釋道，你需要睡眠過程中的快速動眼期來讓你的大腦強化記憶。”
involved in 涉及； 包含在 ... 中
The Magi were likely involved in its practice.