Mental stimulation is the act of providing challenges to your brain. It is a way of "working out" your brain, much like you would lift weights to build or stimulate your muscles. Your brain is very much like your muscles, and by challenging the brain with puzzles, problems, etc, it has been shown to stave off dementia, alzheimer's, memory loss, stress, etc. Hope this answers your question and get started on those mind-benders!

