Related Clues:
- Karate derivative
- Popular exercise system
- Recent workout trend
- Acronym associated with Billy Blanks
- Karate-based exercise program
- Faddish regimen
- Cardio choice
- Fonda's forte
- Aerobics portmanteau
- Kickboxing variation
- Popular aerobic program
- Fitness acronym
- Fitness system
- Aerobic exercise regimen
- Once-trendy Hollywood workout routine