I was 39, pregnant, and in a very warm climate. I was in poor health before the pregnancy, and I was having lots of dificulty keeping active. I was at a bus stop one day, and feeling so light headed. After I got on the bus, a woman tried to get my attention. She’d been at the same stop. She was having difficulty speaking english, but tried very hard to make her point. She pointed, gestured, and I confirmed that yes, I was feeling faint. Boiled down, she advised smelling fresh rosemary. She had a sprig she’d just picked at the bus stop. She had cared that much. My reason for sharing the story is to say that, although it worked for me, amazingly well, I don’t know why, or to what extent it helps. I know that the rest of my pregnancy I kept fresh rosemary with me all the time, and it helped without fail. I was lucky that I was in San Francisco and it just grows everywhere there. Since then, there were a couple of times when I felt light headed. No doctor had a reason. When it happened, I tried holding my kitchen bottle of rosemary in my face and breathe. It actually did help. Eventually, the episodes quit altogether. It is definately worth a try. I sure wish I knew that woman. She would have been a handy friend to have.