You’ll notice that OzFit Workouts call for the use of kettlebells for several sets of exercises. It’s because we believe they can give you a much better overall workout than dumbbells.
Kettlebells are becoming more and more popular in the U.S. Traditional dumbbells have a handle directly in line with the wrist and work on one plane of motion and rely on leverage and fixed positions, but kettlebells are unstable and consequently from the second you pick them up involve a full-body motion.
Kettlebells trigger instability as one has to balance them and use all muscle groups to perform lifts. As a result of the full-body motion involved with lifting kettlebells, a person can get a much better aerobic workout with them than dumbbells.
Kettlebells will produce overall muscle that is dense and strong, whereas dumbbells could allow for certain muscles to become bulkier.