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? Will I survive with a lung full load of oxygen? Is it even possible that I heat up? Will my internal energy production be able to keep me warm?

Let's not take zero-pressure effects into consideration. Only the effect of radiating away heat energy.