Vitamin C is one that almost everybody knows as the immune system booster. When you start to get sick, you take extra vitamin C. While taking extra vitamin C when you’re feeling under the weather can help strengthen your immune system, it’s important to make sure you’re getting enough even on the days when you aren’t feeling sick. A lack of vitamin C has been linked to scurvy, a weak immune system, the tendency to bruise easily, and joint and muscle pain.
You can get vitamin C from oranges, kiwis, pineapple, papaya, kale, and various peppers. Eating a wide variety of fruits and vegetables every day is a good way to make sure you’re getting plenty of this essential vitamin.