This is the 3134th most frequent Korean word.
강화하기로
To decide to strengthen or reinforce.
Here, '강화하기로' indicates a decision to strengthen something, specifically physical fitness in this sentence.
우리는 체력을 강화하기로 결심했다.
We decided to strengthen our physical fitness.
In this sentence, '강화하기로' is used to express a resolution to enhance teamwork as an outcome of the meeting.
회의에서 팀워크를 강화하기로 했습니다.
In the meeting, it was decided to strengthen teamwork.
The phrase '강화하기로' here highlights a suggestion to strengthen regulations for the purpose of protecting the environment.