Most of you must have heard of or used this coolest piece of gym equipment - kettlebells, but are you familiar with kettlebell lifting as a competitive sport? It basically involves repetitive weight lifting performed with kettlebells in a given period of time. Looking like a cannonball with a handle, kettlebells are the ultimate weapon for improving your cardiovascular endurance and building muscle strength. Kolkata lifter, Samrat Sen (who has taken up kettlebell as a full-time sport) can help you take your kettlebell skills and with it your fitness to the next level at his training academy called CoreFit.