This logic isn't quite right though your intuition is easy to understand.
The thought behind these studies is that exercise leads to the release of certain chemicals, in this case BDNF (brain-derived neurotropic factor) that leads to new neuron growth. This mechanism is a physiologically reasonable way for exercise to improve your brain without directly using/engaging the neural circuits in a way that would modify learning and memory.
The thought behind these studies is that exercise leads to the release of certain chemicals, in this case BDNF (brain-derived neurotropic factor) that leads to new neuron growth. This mechanism is a physiologically reasonable way for exercise to improve your brain without directly using/engaging the neural circuits in a way that would modify learning and memory.