Top 3 advantages of Kettlebells?

Hi guys

Today i was discussing with a friend advantages of training with the kettlebell and i cam eup with 3 good advantages:
1. cardio and muscle building workout all in one!
2. you can get a good workout in double quick time
3. a kettlebell is a full body gym which takes up less space!

What are your top 3 advantages for using a kettlebell guys?

Dino:)

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