Little exercise, big effects: reversing aging and infection-induced memory deficits, and underlying processes.
Barrientos RM, Frank MG, Crysdale NY, Chapman TR, Ahrendsen JT, Day HE, Campeau S, Watkins LR, Patterson SL, Maier SF. Little exercise, big effects: reversing aging and infection-induced memory deficits, and underlying processes. J Neurosci. 2011 Aug 10; 31(32):11578-86.