1. After finishing race lactic acid is accumulated in muscles. This causes stiffness/ cramps in muscles. Faster and deeper breathing improves oxygen supply to the muscles converting lactic acid into carbon dioxide and water.

    After finishing race lactic acid is accumulated in muscles. This causes stiffness/ cramps in muscles. Faster and deeper breathing improves oxygen supply to the muscles converting lactic acid into carbon dioxide and water.

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  2. When dust laden air is inhaled, the dust particles enter our nasal cavity. There they irritate the lining of the cavity. This causes sneezing. Sneezing expels out these foreign particles.

    When dust laden air is inhaled, the dust particles enter our nasal cavity. There they irritate the lining of the cavity. This causes sneezing. Sneezing expels out these foreign particles.

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