The jerk blocks are a great tool for a more advanced athlete to train overhead. As athletes progress from beginner to intermediate and advanced, continually setting PRs becomes more of a challenge. The beginner can improve with very simple movements and light loads. The advanced athlete will need more -- more complex training, more complex movements, and more loading.
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Workout
Three rounds of:
On the minute for 5 minutes, 5 back squats
During the next five minutes row 500 meters for time