Albert Barnes Commentary 2 Kings 4:34

"And he went up, and lay upon the child, and put his mouth upon his mouth, and his eyes upon his eyes, and his hands upon his hands: and he stretched himself upon him; and the flesh of the child waxed warm." — 2 Kings 4:34 (ASV)

He stretched himself - Or, “prostrated himself.” The word is a different one from that used of Elijah and expresses closer contact with the body. Warmth may have been actually communicated from the living body to the dead one; and Elisha’s persistence (Hebrews 11:35) may have been a condition of the child’s return to life.