Bodybuilders Need More Than Most People
Puzzle 11 of Tour the Body Pack
Question is: Bodybuilders Need More Than Most People
and the answer is: PROTEIN
Word Meaning:
PROTEIN — (biochemistry, countable) Any of numerous large, complex naturally-produced molecules composed of one or more long chains of amino acids, in which the amino acid groups are held together by peptide bonds.
Definitions from Wiktionary.