Furthermore , core muscles are also develop while knee lifts and side bends targets abdominal muscles .
< ul > < li > Once anaerobic and resistance had been incorporated in kickboxing , then an increased muscle strength and tone are expected .
Core muscles are also develop while knee lifts and side bends targets abdominal muscles .
< ul > < li > Once anaerobic and resistance had been incorporated in kickboxing , then an increased muscle strength and tone are expected .