Well, body-stretching and sleep deprivation are definitely torture (if you ever had 3 nights without sleep you probably would know why...). The problem is, we (the West) wanna claim that we are moral superior to the terrorists, but then we have to be very careful not to be dragged down to their level. To be honest, I really have problems to see a moral difference between a torturer and a terrorist. (Apart from the fact that "confessions" resulting from torture are usually not very accurate; you should read what John Mc Cain wrote about it).
Clashes between IDF and protesters in Bethlehem and East Jerusalem (Reuters)
from the article: Rights groups: Shin Bet torturing jailed Palestinians