整理 J 動詞や名詞の意味を広げる文法形式 教科書 p.96
The pattern expands the verb/noun meaning
接続：Vます remove ます／N + がちだ
tends. Trends often occur, most of which are undesirable.
注意 / Note：Check the subject, tense and tone of both clauses; Avoid translating word for word from Vietnamese.
比較 / Compare：Compare with similar samples in the same article to choose according to nuance and connection. Same 課: 〜かける／〜かけだ／〜きる／〜通す／〜出す／〜やすい／〜にくい／〜づらい／〜すぎる／〜らしい／〜っぽい／〜のようだ／〜みたいだ／〜だらけだ — these models are often mistaken for each other, read the 接続 line carefully and then decide.
冬は運動不足になりがちです。
In winter, it is often easy to lack exercise.
忙しいと食事が不規則になりがちです。
When busy, meals are often erratic.
オンラインで働くと、運動不足になりがちです。
When working online, people often lack exercise.