

ゲームのしすぎは健康に悪いですよ。
毎日健康のために歩いています。
おじいさんは今も健康ですか。
"けんこう(健康)" is in the lesson "In game 2" (Level 34), along with 13 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.