Humans are brought into the world with a fundamental immune system that is weak. Through consistent interactions with the organisms in our environment, and inside our gut, we figure out how to battle against new microorganisms, which helps to strengthen the immune system.
Ayurvedic medicine is focused on three principal forms of body. These are Vata, Pitta and Kapha, and finding a balance between these particular energizing powers. A Vata type is restless in body and mind. Thus, to maintain stability and balance it may require more calming activities and foods. Kapha is often slower and sedentary and requires more lightening and agility to prevent leniency and lethargy.
Read this blog on Ayurvedic routine by Dr. Ankit Pandey to understand this even better.