Inclusion Criteria:  Women aged 40-62 years Upper limit of 62 years because this is 10 years past the median age at menopause, which is the age range when most women experience menopause symptoms  Peri-menopausal women  Defined as no menses in the past 3 months or menses in the past 3 months but cycles are less regular (as self-reported by the women)20  Postmenopausal women  No menses for 12 months or longer Women with surgical menopause will be included Willing to wear the adhesive heart monitor on their chest for 28 days Palpitations group: women who have reported palpitations within the previous 2 weeks Control group: Women who report having no palpitations within the past 6 months Completion of 2-week symptom diary  Exclusion Criteria:  Pregnant Breastfeeding History of arrhythmias (with the exception of sinus bradycardia, sinus arrhythmia or sinus tachycardia) History of stroke History of heart failure Permanent pacemaker Taking antiarrhythmic drugs (with the exception of ß-blockers, diltiazem or verapamil) Known skin allergies (CAM patches are contraindicated) Family history of skin allergies (CAM patches are contraindicated)