exactly what hormones and other substances body sends when we sleep deeply?

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2007-03-09 05:42:38 · 2 answers · asked by usama s 1 in Science & Mathematics ➔ Biology

Cortisol...this kicks in about 2 am. Thats why people who are deficient need a lot of sleep at night and have a hard time getting up before 9 am.

2007-03-10 13:59:06 · answer #1 · answered by laineyette 5 · 0⤊ 0⤋

The endocrine system increases secretion of certain hormones during sleep, such as growth hormone and prolactin.

2007-03-09 14:14:56 · answer #2 · answered by Diamond in the Rough 6 · 0⤊ 0⤋