During this time (usually about 50 percent of the night), body recovery and repair take place, and it is during delta sleep that young bodies grow.
وخلال نوم دلتا (‏ عادة حوالي ٥٠ في المئة من الليل )‏ ،‏ يُصلح الجسم نفسه وتنمو ايضا الاجسام الصغيرة .‏