We always use kettlebells in our sessions. It just makes sense. Nothing burns more calories in a gym setting than kettle-bell training. Kettlebell training is said to burn up to 1200 calories per hour!! Just try achieving that on a treadmill. Not only does KB training raise metabolism, but it also builds lean muscle and increases functional strength (great for rugby/sports). See what the American College of Exercise wrote below..
APR
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