Тренировка с гирями: hardstyle vs sport( GS)
1. Hardstyle.
Пара ссылок
https://breakingmuscle.com/fitness/the-origins-and-explanation-of-hardstyle-kettlebell-training
http://www.riversidekettlebells.com/2009/03/what-is-hardstyle.html
2. Sport, soft, GS(girevoy sport).