

Mein Herz schlägt sehr schnell.
[ˈmaɪ̯n ˈhɛrts ˈʃlɛːkt ˈzeːɐ̯ ˈʃnɛl.]
My heart is beating very fast.
Ist dein Herz in Ordnung?
[ˈɪst ˈdaɪ̯n ˈhɛrts ˈɪn ˈɔrdnʊŋ?]
Is your heart okay?
Sport ist gut für das Herz.
[ˈʃpɔrt ˈɪst ˈɡuːt ˈfyːɐ̯ das ˈhɛrts.]
Exercise is good for the heart.
"das Herz" is in the lesson "Body" (Level 27), along with 8 other useful words. LinDuo has 180 topic lessons like this one, 2,375 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.