Max Trim FX with your teeth don't lift your heel off the ground during this time keep your foot constantly well placed don't bend your head try staring at a fixed point in front of you avoid violent impact with the floor during the defense in order to do this always land on your toes      let's exercise running jacks three two one go if you are unable to complete this motion try simple jumping jacks avoid hard impact with the floor remember to rest your toes on the ground when you descend to lessen the impact and protect the spine do not

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