Swollen feet are a common medical condition caused by a wide variety of underlying factors. The basic reason feet swell is that certain conditions cause fluids to congregate in the feet, which makes them puff up.
Your cerebrum makes up the bulk of your brain and has two parts, the left and right hemispheres. Both sides communicate with each other through the corpus callosum, a network of nerves. Each hemisphere of your brain controls the muscles and senses on the opposite side of your body. The left hemisphere is responsible for mental activities like logic, analysis, speech and language. Using the right side of your body stimulates the left-brain. Puzzles or games help sharpen the left side of your brain.
Practitioners of aromatherapy believe that fragrances in the oils stimulate nerves in the nose. Those nerves send impulses to the part of the brain that controls memory and emotion. Depending on the type of oil [the scent], the result on the body may be calming or stimulating. (WebMD.com).