How to Boost Your Immune System

How can you improve your immune system?
On the whole, your immune system does a remarkable job of defending you against disease-causing microorganisms.
But sometimes it fails: A germ invades successfully and makes you sick.
Don't worry, this book will help you boost your immune system.This book includes: Immune System Explained, The Immune System and Cancer, COVID-19 Infection Linked to Overactive Immune Cells, The Importance of Immunity in Today's World, 5 Ways to Boost Your Immune System, 15 Foods that Boost the Immune System, Workout During the Coronavirus Pandemic