Down 135lbs and I'm freezing constantly! Cold sleeper all my life, waking up chilly almost regardless, with a full comforter on the bed all year. Temperature swings hit me hard: hot and sweaty, then cold again minutes after settling under a fan. These days it's cold around the clock. My workspace is a backyard office I built, kept at 78 degrees with the ceiling fan set to winter mode pushing air up, otherwise I shiver and my hands lose dexterity. Funny, workouts at the gym hardly make me sweat these days either.