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).
A certain amount of this is natural but it many people the foot rolls in too much or over pronates. When standing, pronation occurs as the foot rolls inwards and the arch of the foot flattens. Pronation is a normal part of the gait cycle which helps to provide shock absorption at the foot.The opposite movement to pronation is supination.ronation occurs as weight is transferred from the heel to the forefoot and the foot rolls inwards. Or to put it a little more technically; pronation is the movement of the subtalar joint (between the talus and calcaneus) into eversion, dorsi flexion and abduction (turning the sole outwards, upwards and sideways).