STRENGTHEN, AS MUSCLES Crossword Clue

The most common solution for the crossword clue "STRENGTHEN, AS MUSCLES" are TONE with 4 letters.
We know 2 solutions for: STRENGTHEN, AS MUSCLES
Crossword Puzzle Infos
The term 'strengthen, as muscles' can be expressed in two ways: with 4 letters as 'TONE' and with 6 letters as 'toneup'. To 'TONE' muscles means to exercise them in order to make them stronger and more defined. To 'toneup' muscles is a more intensive form of exercise that is used to build muscle mass and strength.
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