I'm not prone to motion sickness and only experienced it once during a movie (Blair Witch Project). So I was surprised when I began to feel nauseated early in the IMAX 3D film. Removing the glasses helped but unfortunately keeping my eyes closed worked best. The story was pretty predictable but the imagery (even blurry without 3D glasses) was amazing. I would definitely recommend it, but a word of caution to those with potential for motion sickness: think twice about IMAX 3D.