In 15 Minutes:
Shoulder Press x2
-Build to challenging double
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In 20 Minutes:
Shoulder Press (back off sets)
2-2-2-2
In between sets do:
Box Shoulder Touch (2) + Walk In (1) x1-3
Split Squat Hold x5-10 seconds
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O.T.M for 8 Minutes:
Minute #1: Box Walk In x5
Minute #2: Split Squat x20 sec/Rest 10 sec (x2)