Fitbits can monitor a lot of things from how many steps you take, how many calories you burned, to your heart rate.

It also cal tell if your pregnant.

This is really true.

According to WGN a woman borrowed her husband's Fitbit and noticed that the data it reported was strange. Her heart rate was unusually high for her. "It registered at 110 beats per minute, instead of the normal resting heart rate of between 60 and 100 beats per minute."

Thinking that it was defective she and her husband were going to return it to the store. Until her husband went to a Reddit Forum to ask advice on what he should do and one of the readers commented that his wife could be pregnant.

Well sure enough she took a pregnancy test and it tested positive.

Wow! I don't know about you but I find that really amazing. Who knew?