Sri Aurobindo
Letters of Sri Aurobindo
08. Transformation of the Physical
It is due to the influence of the physical consciousness. The physical consciousness or at least the more external parts of it are, as I have told you, in their nature inert – obeying whatever 
force they are habituated to obey, but not acting on their own initiative. When there is a strong influence of the physical inertia or when one is down in this part of the consciousness the mind feels like the material Nature that action of will is impossible. Mind and vital nature are on the contrary all for will and initiative and so when one is in mind or vital or acting under their influence will feels itself always ready to be active.