-아/어도 "even if" plus 참다 "hold it in" is the language of self-restraint. Pain is the commonest trigger here, to the point of being someone's motto: [규현 (옛) 좌우명: 아파도 참자]. It applies just as well to holding back an emotion (뭔가 조금 화가 나도 참았던 게 많은 것 같아요), a purchase (하나만 결제해볼까 했는데 그래도 참았습니다), or a reaction on camera ((맛있어도 참아... 리액션 참자...)). The failure of it is also expressed with the same verb: 참을 수가 없었기 때문에.