I am a warm sleeper but I use the right kinda bag for the weather. if it's going to be below freezing I usally go with something in the 0 range bag I do not mind getting hot I can vent it if I do but I absolutely hate being cold
when I sleep outside even the least little bit cold I don't like, so that is why I use a bag rated for more that what it's going to be outside. I do use a pad I have a cheap guide series pad maybe 3/4 inch thick and poly pro clothing I can get down to single digits. I also put what ever is in my pack underneath the hammock from pee bottle to cooking equipment and all the other stuff.