Sometimes you read pilots and understandably they're doing such a frantic tap dance for approval. I get why - it's such an incredibly competitive market.
I'm a very anxious person and it's hard for me to be in the moment. Improv demands that you be in the moment.
By the end of high school I would do shows at the theater at night and then take the train home and go to school the next morning.
When improv is bad it's excruciating to watch and to be involved with it is a unique type of torture.
If I'm doing comedy I try to improvise a lot. Even if they don't use it it helps me loosen up and figure out the character.