Yes, that is torture. If you think any of those things are okay, than you're out of step with the legal definitions of torture that we work under. A military interrogator caught using any of those above techniques could be court martialed and imprisoned.
Unless you were teaching survival training for U.S. service members. Then, you'd be okay. (Except for the drugs part. That still wouldn't fly.)
It makes no sense to me that we make life rougher for our troops in training than we are allowed to make it for terrorists in our custody.