← Back to headlines

The 21-15-9 Workout Routine: A Quick Full-Body CrossFit-Inspired Exercise
A fitness program based on three numbers—21, 15, and 9—allows users to perform a demanding full-body workout in just 15 minutes. Originally popularized by CrossFit, the routine can be adapted for various fitness levels.
Sources
Showing 0 of 1 sources
No articles available in your preferred languages.
1 article available in other languages below.



