Heart palpitations in 20s can feel like fluttering, racing, or a thudding sensation. Dr Narasa Raju Kavalipati, Senior Consultant, Cardiologist at CARE Hospitals, Hyderabad, said "They're often harmless but can signal an issue. Triggers include stress, caffeine, or poor sleep." If symptoms persist or worsen, medical evaluation is key for peace of mind and safety.