Palpitation is an awareness of the abnormal beating of the heart. It may occur in people with or without heart problems. Heart palpitations when lying down is not a common occurrence and can be caused by various factors.
Flat feet occur when the normal foot arches have partially or completely collapsed. When the foot is put to the ground the inner or middle side of the foot comes down to the floor rather than remaining raised. This can cause the whole foot to roll inwards (this is called over-pronation).
Fallen arches , or flat feet, happen when the arches of the feet flatten out (often when standing or walking), causing foot pain and other problems. Flat feet can be treated with shoe inserts, shoe adjustments, rest, ice, using a walking cane or brace, or physical therapy. Sometimes surgery is necessary.