body heating spells

Put on a blanket.

If you want to practice you can do some energy work, flexing your muscles can charge energy, make psi balls, or just charge your body with energy. I've noticed it's very warm inside the circle so you could try that.

I am reminded of a story I read once. The short version goes this girl cast an elaborate spell, frantically calling on creatures and gods to help her find her lost necklace. They get mad and teach her a lesson because you shouldn't call on the powers of the universe for trivial matters. Magick should be a last resort when something is deeply needed, not because your favourite shirt is lost, you burnt dinner, or you're cold.