A new MAC protocol in Wireless Sensor Networks (WSNs) for energy preserving is a research based project in the field of wireless sensor networks. The paper on WSN results in understanding the working of wireless sensor networks on various applications. The authors studied the various available MAC protocols in wireless sensor networks and the applications of the protocols, along with their implementations in the layered architecture of WSN. In their paper, they observed that, the wastage of energy in wireless sensor networks is high due to communication overhead between nodes. In wireless sensor networks energy plays a most important role for the sensing, processing and communication at node level.