Sudden Heart Palpitations: Are They Dangerous? Causes and When to Get Checked
Sudden heart palpitations can be concerning, especially when they occur while sitting, resting, or doing light activities. The sensation may feel like the heart is beating too fast, pounding, fluttering, or skipping a beat. This condition is often triggered by stress, lack of sleep, exercise, caffeine, alcohol, nicotine, or certain medications. However, palpitations can also be associated with heart rhythm disorders. Learn about the causes, warning signs, and when to seek medical evaluation.
Last updated: 01 Oct 2026