Veins - Carry oxygenated blood to the heart, Ice baths - It removes lactic acid , Systole - The heart emptying of blood, Massages - Applying pressure to circulate blood, Atria - They have thin muscle walls and collect blood coming into the heart, DOMS - Small tears in the muscle fibres that cause pain but hypertrophy, Heart rate - How many your heart beats per minuet, Systole - The heart emptying of blood, Ventricles - The lower chamber which receives blood from the atria,

cardiovascular system

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