mental exercise

15 LETTERS · STARTS WITH M

mental exercise is a valid 15-letter word worth 25 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

M3E1N1T1A1L1E1X8E1R1C3I1S1E1

3 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 8 + 1 + 1 + 3 + 1 + 1 + 1 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does mental exercise mean?