system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do completely healthy people feel comfortable at different temperatures?

Example: My fiancé likes the house temperature set to high 70's (borderline 80's- I'm sweating just thinking about it!) and enjoys Spring/Summer while I like low 70's and Fall.
gpt
It's often due to varying body shapes/sizes. People who are smaller and/or skinnier have a higher surface area to body mass ratio. This means that they radiate heat faster (and feel cold faster) because a higher percentage of their total body mass is exposed to the air. 

It also varies depending on muscle mass and body fat.