How do travel sickness wristbands work?

The wristband has something in it that tells if you're getting sick. Like a mood ring, but it doesn't change colors. Except when it tells when you get sick. It changes red when you are getting sick. ANSWER 2 xxlauz Travel wrist bands have a little pressure point on it that causes nerves to be sent to your brain telling you that you're travelling and it tells the brain when you feel sick so it can help adjust your body to prevent that. They are definatley worth getting if you're travell sick. My travell wrist bands are a life saver. I take them for every longish journey i go on. Without them i'd be doomed. Its crazy how they work but they seem to do a pretty good job.