Healthy young adults and athletes often have heart rates of less than 60 beats a minute. In other people, bradycardia is a sign of a problem with the heart's electrical system. It means that the heart's natural pacemaker isn't working right or that the electrical pathways of the heart are disrupted.
December Orlando Weather is usually very pleasant. Yes, you can bring your shorts this time of year, but bring long pants too. Orlando Weather In December is warm during the day and humid enough at night to keep most nights from getting cold. Yes, a freak sub-32Â°F day is possible, but it's quite unlikely.
Humidity Plays a Part. The level of humidity in the Keys can make heat seem more oppressive and uncomfortable. It is still relatively high in December, but much more tolerable than the moisture-laden air of the preceding months. The relative humidity in the city of Marathon, which is about halfway through the Florida Keys, generally ranges from 62 to 88 percent over the span of days in a typical December.