
Palpitations
Medical Condition
Usually means a health concern. Don't use lightly to describe minor worries or excitement.

After running up the stairs, he felt palpitations and decided to see a doctor.
Not Always Serious
Can describe temporary situations like a reaction to caffeine, not just severe illness.

Caffeine sometimes gives me heart palpitations.
Stress Connection
Often related to stress or anxiety situations, indicative of a body's reaction.

Final exams always give me palpitations.
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