Stormsister is a shoulder endurance workout for anyone who has ever been told to wait out the weather and decided to become it instead. Arm scissors, arm circles and scissor chops - 140 reps of continuous, unweighted arm movement per set, nothing in your hands, nowhere to hide. The title carries the energy of a storm with a family resemblance: this workout doesn't pass through you. You pass through it.
The circuit runs without rest between exercises, and arm circles are the pressure system holding the whole front together - three blocks of 20, including the closer, keeping the deltoids under rotation while everything else swirls around them. Between those blocks, two scissor variations cross the arms through the horizontal plane: arm scissors at shoulder height, then scissor chops sweeping wider and freer through the second row. The alternation matters - circles keep the shoulders under continuous small-radius tension, scissors stretch and cross them through their full width - so the muscles never settle into one pattern long enough to find shelter. There's no single hard rep anywhere on this poster. There's just weather, accumulating, until somewhere around rep 100 your arms understand that the storm has a surname and it's yours.
Keep every movement at shoulder height with the shoulders themselves pressed down away from the ears. Cross arm scissors alternately - right over left, then left over right - with long, straight arms. Draw circles round and controlled, never shivering ovals. Let scissor chops sweep through their fullest range, opening wide behind you before crossing again. Slowing down is permitted; lowering the arms is surrender to the wrong storm.
Little sisters of storms don't ask for calm conditions. They bring their own front - twenty reps at a time.
Make it Harder: Hold a water bottle in each hand throughout.
Make it Easier: Halve every block to 10 and shake the arms loose between exercises while staying in motion.
