Kickboxing is a fun and effective cardio workout that engages almost every muscle in your body. So instead of plodding along on the treadmill, try these drills from fitness expert and certified kickboxing instructor
Jessica Smith to torch calories and tone your arms, abs, shoulders, back, and legs at the same time.
How it works: Perform each drill back to back without rest. When you've finished the last drill, rest for 1-2 minutes and repeat the full circuit one more time.
