muscle pump
Veins squeezed rhythmically
Muscle pump refers to the mechanism by which contracting skeletal muscles squeeze veins and push blood back toward the heart, particularly from the lower extremities against gravity.
Standing still allows blood to pool in the legs; walking activates the pump.
In fitness contexts, muscle pump describes the temporary swelling and tightness felt during resistance training as blood engorges the working muscles: I got a great pump in my biceps today.
- contractionReduction in size
- blood flowMovement through vessels
- blood vesselsTubes carrying circulating fluid
- veinsBlood-return tubes
- squeezeFirm bilateral compression
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