Are frozen fruit dangerous when eaten in large quanties....?

I normally eat frozen fruit out of the bag (grapes, blueberries, cherries, mango's, raspberries, strawberries).... However one day after finishing off 3 bags of frozen man gos. I found that my stomach area was cold to touch vs the rest of my body. I also find that I eventually become seriously colder then the room temperature... So the curiosity in me is questioning.. Is this dangerous what I'm doing???