You literally have to use them or you're going to lose them

[Cuse 1988]

Scientists used to believe that you were born with a certain set of neurons, and mental decline was an inevitable part of aging. Brain Peak Thankfully, they now know this isn't true. Your brain continues to produce new neurons throughout your entire life. So, why do you have trouble remembering and why don't you feel as "sharp" as you used to? These new neurons must be put to work in order for them to survive and strengthen. http://www.supplements4help.com/brain-peak-brain-power/