The coronavirus, also known as Covid-19, has infected more than 5.8 million people with over 351,000 deaths around the world. India is one of the faster-infected countries where tentatively 89,000 active cases, 86,000 discharged or cured and 5150 deaths reported as per the Indian Ministry of Health and Family Welfare by the end of May 2020. People of India are already beyond their all extreme capacities, and patience due to phase-wise lockdown imposed more than two months, i.e. since 24^th March 2020. They are now waiting to rejoin in their work and resume their suspended services from 8^th June (unlock phase-1). COVID-19 infections and death affected not only people's physical and mental health but also the entire economy as well as per capita income due to closures of almost all industries. In this review article, we are concern about essential nutrition through the daily average staple meals based on a much lower budget than usual due to financial troubles in the middle-class families and other classes as well. The only option to be healthy is by adding immunity-boosting foods which are not only cheap and best but readily available in our daily diet. In this COVID-19 phases, Indian people can exclusively rely on traditional foods as immunity elevator such as spices, citrus fruits, some vegetables, herbal tea, honey etc. The article, therefore, provides an overview of the home-based simple practice of diet based on online searches of relevant literature available in NCBI, Embase, other useful databases including Google scholar. The study overall reviews the values of Ayurveda, nutrition, yoga and their health benefits by protecting and boosting immunity.