The trendy 'CAVEMAN' diet, also known as the Paleo Diet, is a nutritional plan that focuses on eating foods that were available to humans during the Paleolithic era. This includes lean meats, fish, fruits, vegetables, nuts, and seeds. The goal of the diet is to reduce processed foods and to focus on natural, whole foods. It is believed that this type of diet can help to reduce inflammation, improve digestion, and promote overall health.