Answer:
It was actually torture...but the 'doctors' in the camp liked to call it "experiments". I have heard of a doctor who liked to do surgery on kids, apply chemicals on them, treated them like gineau pigs....even joined the bodies of 2 kids (twins) ...who afterwards when sent back to their parents in the camp....their mother had to kill them because they were suffering from intense pain...and bleeding...and killing them was the only option to reduce the torture....and there is much more i dont know about....holocaust is one of the worst things that had ever happened in world history.....