Between life and death

I was doing a map in Minecraft, with a system of life that increases when you pass a level of experience. And there I gave myself 1 Level of xp, I was sanctioned to equip me with an item that added a heart. I received this heart but I died, when I wanted to réssuciter I reappeared at the place of my death and my body was at 30 °, he roamed and was red as if I would die continuously but not entirely because my movements were normal. I had to kill myself to become normal again. (Sorry if there are inconsistencies in my text, I used google translation)