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(Not a doctor) For me it was always the extremities (hands, feet) that would het cold. I got pair of battery heated gloves https://www.amazon.com/Rechargeable-Battery-Electric-Arthritis-Snowboarding/dp/B082XXN5LK?th=1 and always wear tight knit wool hat. But what truly helped me was being diagnosed with iron deficiency anemia that was caused by an infection, I am still on the cold side (I always was) but curing it was a big step up. You may want to do a blood work to check your iron levels.