Argentine study proves that 25 minutes of physical activity can improve spatial memory. Neuroscientists and technologists proved that even sedentary people improved their spatial memory after doing 25 minutes on a stationary bike.
The key is Brain Derived Neurotrophic Factor (BDNF), a protein related to the growth and health of neurons that also increases when you do physical exercise. Spatial memory, which records information about the environment and the location of objects, deteriorates with aging and Alzheimer's disease.