It is far better to get in early and nip illness in the bud rather than try to overcome it once it has a strong-hold within your body.
A big part of being able to do this is to firstly be aware of what is going on in your body, even at a very subtle level. Being aware of early signs that your immune system is springing into action due to the possibility of pathogenic invasion of your body, means that if you take natural action straight away to help your body right at the onset, your immune system has a better chance of being able to do its job effectively. If you ignore communication from your body, or are simply oblivious to it through lack of awareness, and carry on subjecting the body to things that can lower your immunity such as eating unhealthy food, stress, sugar, alcohol, coffee, some pharmaceuticals, drugs, toxins, lack of sleep, lack of sunlight and lack of fresh air, and so on, or, start your support actions too late, your body will struggle to resist invasion and your immune system will have a far greater task to undertake when your first lines of defence are hindered, making your immune system's ability to carry out its intended purpose sub-optimal , or at worst, totally ineffective.
There are many natural health "tools" that can be implemented to help you to avoid succumbing to illness, but just as importantly, it is also what you don't do (all those things that hinder your body's capabilities) that plays a huge role in not getting extremely sick. And treating your body naturally, as opposed to just suppressing symptoms with pharmaceuticals which can interfere with your body's own natural defence mechanisms, can set yourself up for better long-term health outcomes.
Here are some suggestions from Power of Nature for helping to enhance your immunity.
May your buds of health and happiness be free to flourish., and your buds of ill-health be nipped off before they can even start to grow.