Not really but I don't really feel sick whenever I'm nervous or anxious. When I first started, I would shiver in the waiting room even though I was wearing pants and a sweatshirt so it wasn't because I was cold. Last week I actually found myself shivering again but I think part of it was that the AC was blasting in the waiting room. I had just come back from a two week vacation so it was probably some anxiety/excitement as well.