Kettlebells and Dumbbells in Royalty Free Pictures
Kettlebell The kettlebell is a cast-iron or steel weight (resembling a cannonball with a handle) used to perform dynamic exercises that combine cardiovascular, strength and flexibility training. Russian kettlebells are traditionally measured in weight by pood, which is around 16 kilogram or35 lb. Kettlebells were developed in Russia in the 1700s, primarily for weighing crops. …
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