Your core temperature can drop but not much, most often when people wake up at night and feel cold its because when you sleep your heart rate lowers to its resting rate so circulation slows giving that "cold" feeling.
Colder
20 C is colder.
7 is colder
-75 Fahrenheit is much colder.
i think its colder but i dont know am i right?
I was told by my doctor that sometime sleeping better when it is colder could be a sign of early heart problems, but in order for that to be true in a persons case they would have to have other symptoms, such as swelling in the feet and legs, sleeping slanted having severe heartburn which can be mistaken for angina. Some people sleep better when it is cold because their body temperature is higher then others, when they are sleeping. Most people that are obsess also sleep better when it is colder. I have noticed that when I sleep I have the window open and my fan going even when it snows but at times I will cover up but I breathe better when it is colder. I was even checked for sleep apnea at one point.
It is getting colder outside. It's colder in here than it is out there. My beer is colder.
Colder, much colder.
Nope. They just might sleep a little longer in colder weather because they are reluctant to leave their warm comfy beds.
Colder
-40c is colder.
Colder
Warsaw is colder
The Antarctic is colder.
Colder
Colder
Colder, coldest. Perfectly regular (and answered already on this site!)