A ton of athletes have developed their own rituals for getting ready to workout. Some people have to get sweaty, others need to work the hips, some people need to open up the shoulders, and some want to drill the movement at light weight. Rule of thumb: the shorter the workout, the more you need to warm up. The longer ones need less preparation.
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Workout
Snatch 1-1-1-1-1-1-1 reps