This is one of those questions that we don’t know the answer to — the Bible doesn’t tell us much.1 We know that he was a male (Gen. 2:22-25), but nothing more than this.
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Notes
1. Islam teaches that Adam was ~27.5 metres (90 feet) tall (see hadiths narrated by Abu Huraira [Sahih al-Bukhari, Vol. 4, Book 55, Nos. 3101, 3102; Vol. 8, Book 74, No. 5830; Sahih Muslim, Book 40, Nos. 6795, 6796, 6809]), which is a medical impossibility [J. B. S. Haldane, ‘On Being the Right Size‘ (1928); George Barnes, ‘Physics and Size in Biological Systems’ (1989); Ian Sample, ‘How tall can a human grow?‘ in The Guardian (Tues. 06/05/2004)] (perhaps another proof that Muhammed was not a prophet from God [also see ‘Does the Quran contradict the Bible?‘]).