Feeling chilly when the AC is blasting is one thing. But if you’re always shivering, or your hands and feet feel like blocks of ice while everyone else nearby says the temperature feels toasty, then it’s time to investigate. It’s common for women to report feeling cold, partly as a result of physiology and also a greater susceptibility to conditions that can contribute to coldness, says Holly Phillips, MD, medical contributor for CBS2 News and author of The Exhaustion Breakthrough. This checklist of 10 reasons your internal thermostat is out of whack can help you get a handle on why you’re chronically freezing your butt off.
Low body weight—defined as a BMI hovering around 18.5 or under—can chill you out for a couple of reasons. First, when you’re underweight, you lack an adequate level of body fat to insulate you from cold temperatures, explains Maggie Moon, RD, a Los Angeles–based nutritionist. The other thing is, to maintain that low BMI, you have to reduce your food intake so you likely aren’t eating very much at all. Skimping on calories puts the brakes on your metabolism, so you don’t create enough body heat. Consider putting on a few pounds by loading up on whole, healthy foods that contain lots of protein, fat, and complex carbohydrates.