When I woke up today I checked mine and it was 42. Last night it was hovering around 44, but I had eaten about an hour before going to bed, which is something I've been trying not to do since losing 55 lbs. Bad habits are hard to break!

The gadget I use is an oxygen sensor that you put on the end of your finger to detect your oxygen uptake percentage. It also has a HR sensor. My sister gave it to me as a gift.