The jammer is great for explosive strength. It is also pretty easy on the joints for being an explosive movement. Used the hell out of it when I was in high school. Does your gym have one?? I haven't seen one outside of a high school or college gym!
The jammer is great for explosive strength. It is also pretty easy on the joints for being an explosive movement. Used the hell out of it when I was in high school. Does your gym have one?? I haven't seen one outside of a high school or college gym!
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