Patient: Description (time of onset, main symptoms, hospital, etc.): My family, female, 57 years old, only found in the past two months, early in bed blood pressure 65/106, heartbeat 48, morning after exercise blood pressure 68/110 or so, heartbeat 68 or so, no exercise after a period of quiet 55 or so, physical symptoms slightly dizzy with premature beats (occasional), no such phenomena before, no treatment, this situation is considered normal, slow heartbeat with cure, can give some advice, thank you.