Hormone methods, such as birth control pills, protect against stis.

STI stands for sexually transmitted disease. Meaning it is due to sexual intercourse.
By simply using pills , you cannot prevent urself from not having an STI especially if your partner have it. One method I know is to use condom during sexual intercourse to stop yourself from acquiring sexual transmitted diseases.
In short, to avoid STI, avoid having sex with anyone you dont even know

gargle with salt water; gargling with warm salt water can soothe a scratchy throatsuck on a lozengetry otc pain reliefenjoy a drop of honeytry an echinacea and sage spraystay hydrateduse a humidifiergive yourself a steam shower

hope this !

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Dbecause it isn't always an athlete, breathing techniques don't have to be advanced, and consistent intensity won't make it go down or stay the same