I found this warmup routine to practice
Mike Burgener's Warmup Drill
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*I may have posted this here before, but I thought it might be worth repeating. Is anyone else doing something similar?
This is the warmup sequence Mike teaches to all of his lifters. It reinforces good technique, gets the blood flowing and the joints loosened up. It also serves as an effective and safe drill to help learn the snatch; it can be done several times per day if needed.
Use a 6' PVC pipe ($1.37 at the local hardware store). Use a snatch grip. All steps are done for three reps.
1. Shrug.
Straight arms, hook grip, wrists cocked in, elbows rotated out, squat stance. Try to hit your ears with your shoulders.
2. Shrug + pull.
Like step 1, then pull to chest height. Don't bend arms until shoulders are fully shrugged. Keep the bar in very close to the body. This is a fast move, with no pause between the shrug and the pull.
3. Muscle snatch.
Like step 2, then finish pulling the bar to the overhead position. The bar should end up in line with the back of the ears, with the wrists cocked back.
4. Behind the neck press.
Still using a snatch grip, press from the shoulders where the bar normally sits in a back squat. This is not going to wreck your shoulders; it's only a 4-ounce PVC pipe.
5. Behind the neck push press.
Like step 4, but with a little knee kick. Do NOT go up on toes, kick through the heels.
6. Pressing snatch balance.
Squat stance. Press the bar up as you simultaneously go down into a bottom position overhead squat. With practice, the bar doesn't really move. This is not a quick move.
7. Heaving snatch balance.
Squat stance. Like step 6, but with a little knee kick. This is a quicker move than step 6.
8. Drop snatch.
Move the feet a little closer, into the pulling stance. Use little knee kick like step 7 but drop down into the bottom of the overhead squat position as fast as humanly possible while popping the feet into the squat stance. Minimize air time. Faster. Faster still.
You can also add a step 9 if you wish, snatches from the hang position. The whole sequence flow from one step to the next and should take no more than a minute or two.