A lot of directors are great and they are fine but you know I think that Harry really takes a special point to really engage the actors and really make it feel like a safe place for them to explore whatever it is they want to explore in whatever scene with their character.
The bottom line is that there is a lot more that could and should be done to help people with nutrition and exercise.
To wait, for an actor, is not like someone who's waiting to see the doctor. It's not the kind of wait where you get bored.