cardio vs slimnastics

cardio

noun
  • Exercise with the goal of raising the heart rate. 

adj
  • Cardiovascular; pertaining to the health of the circulatory and respiratory systems. 

slimnastics

noun
  • A form of athletic exercise intended to promote weight loss. 

How often have the words cardio and slimnastics occurred in a corpus of books? (source: Google Ngram Viewer )