私(わたし)は太(ふと)りやすい体質(たいしつ)なので、食事(しょくじ)に気(き)をつけています。

Because I have a constitution that makes me gain weight easily, I pay attention to my diet.

母は冷(ははひ)えやすい体質(たいしつ)です。

My mother has a constitution that makes her prone to feeling cold.

父(ちち)は病気(びょうき)になりにくい体質(たいしつ)だ。

My father has a constitution that makes him less likely to get sick.

姉(あね)は汗(あせ)をかきやすい体質(たいしつ