Most skinny people really feel the cold because they don't have much body fat on them.
People who are thin tend to be more sensitive to the cold because they don't have a lot of insulation around their body.
ーMost skinny people really feel the cold because they don't have much body fat on them.
「痩せた人の多くは脂肪が少ないから寒がりだよね」
skinny people で「痩せた人」
to feel the cold で「寒がる」
body fat で「体脂肪」
ーPeople who are thin tend to be more sensitive to the cold because they don't have a lot of insulation around their bodies.
「痩せている人は、体の周りに断熱材がたくさん付いていないからもっと寒がりである」
thin で「痩せた・ほっそりした」
to be sensitive to the cold で「寒がりだ」
insulation で「断熱材」
これはジョークっぽく言う言い方です。
ご参考まで！
カナダ 
