Please choose the correct ending to complete the given sentence: Health: [header] How to treat tachycardia with home remedies [title] Avoid caffeinated food and beverages. [step] Stimulants like caffeine can exacerbate the symptoms of tachycardia. Caffeine contains chemical compounds that increase your level of alertness.

Ending1: It does this by stimulating the central nervous system and cerebral cortex of the brain, which causes vasodilation of your blood vessels. This can increase your blood pressure, which in turn can affect the electrical conduction in your heart, leading to rapid heartbeats. Ending2: These substances are called " bicarbonate. " when drunk, the bicarbonate can induce nausea and vomiting. Ending3: Doctors may recommend that you avoid these drinks as much as possible, especially during periods of anxiety and panic. [substeps] Caffeine contains caffeine, which has not been shown to reduce tachycardia or other problems associated with eating and drinking. Ending4: [substeps] The stimulant caffeine also increases your blood sugar, making it worse. Talk to your doctor if you have tachycardia.

Answer format: ending1/ending2/ending3/ending4