When you're muscular but have super low body fat, do you

Only when no gf

Not 'like skinny people do' but you'll feel colder than when you're fat. Muscle still insulates, just not as well as fat.

Dont know if I am muscular, but i have bodyfat percentance of 6 and is it cold as hell

>>39537755
No, because your vascularity, circulation and activity levels eclipse that of a skinny person.

No. A majority of the energy output by muscle is heat energy, especially when in use. When engaged in intensive use, only about ~30% is generating movement; the other 70% is heat. Muscle tone (the scientific definition, not the meme one) increases as well perpetuating more consistent heat generation.

Skinny people have little muscle and little fat, which makes them feel cold. Fat people have to work a lot harder to perform regular functions due to the extra fat, as well as have a lot of insulation from the extra fat, which makes them hot.