Best end of day
I used to think that baths were a bit uncomfortable, I just sat there and... well, not much. Since I started using rosemary oil I can relax fully and now baths are actually pleasurable. Only thing I'd say bothers me a bit is that I end up smelling like rosemary even if I use shower gel afterwards, but that's not that bad because the smell is nice.
Pain relief
Taking hot baths with rosemary oil mixed in has been really good for my general well being as some aches and pains, especially on my legs and shoulders, are very close to being gone.
Academically beneficial
As an experiment I decided to add rosemary oil to a hot bath every other day for a month before an exam, and my performance increased substantially compared to before using it. It's science folks.