Wristwatch Battery

My bracelets (all three of them) lose time when I wear them, keep perfect time when I wear them.?

I have three wristwatches, all batteries. They are all made the same exact time to start. Whichever one I chose, that I bear loses time. I wear that day, he back at home, the other two are very good, that I wear is 2-3 minutes late. I do not have a pacemaker or anything electronic in my body, this leads me nuts. Any scientific thought on this? They are all hands were moving. I am a professor of mathematics and science and electronics around fairly typical. Laptop, LCD projector, nothing unusual.

Unless you're traveling to relativistic velocities in the context of your daily routine, I would say that EM fields generated by biological disturbing the oscillation of quartz crystal. If not that, then it might be something in your workplace. You can take the two other watches with you, but keep a few meters you as an experiment.

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