Sweet Mother,
How can one draw energy into oneself from outside?
That depends on the kind of energy one wants to absorb, for each region of the being has a corresponding kind of energy. If it is physical energy, we absorb it principally through respiration, and all that facilitates and improves respiration increases at the same time the absorption of physical energy.
But there are many other kinds of energies, or rather many other forms of Energy, which is one and universal.
And it is through the various yogic exercises of breathing, meditation, japa and concentration that one puts oneself in contact with these various forms of Energy.
Ref : Some Answers from The Mother