I have tension in left upper torso near heart. also heart palpitations three days straight. it intensifies when i rotate my body side to side.

Little information: offered for complex issues. In general, while what people perceive as "palpitations" (a symptom, as perceived by the body owner) do correlate ~70% of the time with simultaneous changes in hearth rhythm, consistently ~30% do not. Given very limited details offered, likely most to all symptoms are skeletal (not heart) muscle, both controlled, split-second by split-second, 24/7, from mind/brain.