When it’s cold, I wake up in stages

Waking up on a chiily morning, stage one:have a hot drink and turn heater on and get back in bed
Stage two: when I get up to powder my nose, turn on lights as I pass them, open all curtains and blinds, then get back in bed.
Stage three: when I see I’m still in bed and all the lights are on and It’s daylight outside, it feels so weird that I get up