Suppose I float in a dark part of space (no radiation), after I have been robbed of my spacesuit during a spacewalk. So I'm naked. But I can keep my breath as long as I want. My eyes are tightly closed. Can I stay alive? Will I freeze? Does it help me to move wildly (to generate energy)? Will I survive (until a spacer comes picking me up), must a space ambulance be contacted, or maybe even a bodybag be asked for? Is it even possible that I heat up?