| > [...] that drinking a lot of water make the difference for my general health [...] Anything that you eat or drink will affect your "general health"; from your gut bacteria to the pores on your skin. Water and caffeine-free herbal loose-leaf green are both very healthy in this regard. Others have mentioned diet, sleeping, stress management, eating lots of fruits/veggies. I'll add: Get regular, consistent, intensive exercise. Preferably something that targets your larger muscles (your legs/glutes) and your core. Doesn't matter what it is. Some people swear by Rippetoe's Starting Strength, but you choose what you like. "Immune system" is a holistic term. Making sure your heart is healthy and strong, your bones are healthy, your gut is healthy, and so on, all contributes to your immune system. Supplements are supplements. They're nice to have but they can't replace a diet that you can depend on every day. And they can't replace breaking a sweat during exercise either. |