Muscle strengthened by a StairMaster, informally

Let's find possible answers to "Muscle strengthened by a StairMaster, informally" crossword clue. First of all, we will look for a few extra hints for this entry: Muscle strengthened by a StairMaster, informally. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.