Bliss is a feeling of what we are. Bliss is the inclination. The delight and satisfaction all together make life wonderful. Yet, wellbeing is not esteemed till affliction comes. This wellbeing and affliction are two essential methods of a coin, we realize that coin with the name of invulnerability. Perfect working of the invulnerable framework chooses the wellbeing. So we can state invulnerable framework is an exceptionally significant arrangement of the body. This safe framework recognizes the hazard i.e. microorganisms, parasites, and infections. This framework separates sound cells from unfortunate one and annihilates them. So legitimate working of the resistant framework is vital. This safe framework comprises of resistance cells like B and T cells that are in charge of its working. To keep up this solid invulnerability and safe framework, we should keep our way of life sound. Legitimate solid propensities and sustenance. Some place because of any contamination or shortcoming...