There’s no doubt that vitamin C helps aid health in the adjustment of bodily tissue and the immune system, but it also has an effect on your emotions. If you feel mentally fatigued and tired all the time, it’s probably because you’re not getting enough vitamin C.Oranges, kiwis, peppers, strawberries, kale, and many more all include the magical component known as vitamin C, which is beneficial to brain health and prevents mental downturn.