Long COVID cold intolerance, freezing below 70 despite layers and heated blanket

Summary

A person in their mid-50s with long COVID described getting very cold when it is below 80 and no sun, and freezing below 70. They said they wear long johns and hoodies 100% of the time and still get cold, though a warm spell let them skip the long johns, and at night they use a space heater and heated blanket. They noted they used to wear shorts in winter unless it was snowing or raining, and wondered how the cold intolerance would progress as they age.