Mission Control used a coded phrase to warn Armstrong his metabolic rates were high, and that he should slow down.
mˈɪʃən kəntɹˈoʊl jˈuːzd ɐ kˈoʊdᵻd fɹˈeɪz tə wˈɔːɹn ˈɑːɹmstɹɔŋ hɪz mˌɛɾəbˈɑːlɪk ɹˈeɪts wɜː hˈaɪ, ænd ðæt hiː ʃˌʊd slˈoʊ dˈaʊn.