Your immune system is the unsung soldier of your body, fighting for your wellness every day. But it needs support to do the job it was meant to do. Learning more about how it functions can help you to provide that support.

Scientific research into immunity is yielding eye-opening insights every year. Despite the complexity of this system, we are starting to understand how it works and how to prime it for success.

Here are 3 statistics about your immune system that could help you to help it.

1. Symptoms Can Mean It’s Working: Sometimes symptoms of the disease—take, for example, the congestion of the common cold—means that your immune system is working, not failing. That’s because the symptoms are related to processes your body needs to undergo to fight the disease. Having the sniffles means your body is winning in the war against the rhinovirus!

2. Sleep Supports It: Did you know that your T-cells can drop when you don’t get enough sleep? When that happens, your immune system lacks what it needs to ward off disease. In fact, according to one study, vaccines may even be less effective for people who sleep less than 6 hours a night.

3. Gut Bacteria Also Support It: At this stage, the link between a healthy gut with a wide variety of essential bacteria and good immune health is undisputed. This bacteria fights disease-causing bacteria produces antibodies and may prevent allergies and auto-immune diseases.