Ryzyko: uważać na nadgarstki
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Wspinaczka (mountain climbers)
Starting position: Start in the upright push-up position, aka. the high plank position.Hands should be directly under your shoulders.Keep your head in line with your back, facing the floor.Feet should be about hip-width apart. Steps: Move one knee toward the center of your body, towards your elbows, keeping the other leg extended. In a quick…