The gates are stored on the bones of the spine. The better the formation of the gate, the lesser the number of bones it will occupy but the more the stress on the individual bones. In summary, the body will be strained no matter how refined the gate is. Because until the gate is harvested and removed, one's body will feel heavy and sluggish.
The body will actually slow down coupled with the fact that the gate will continue to absorb the momentum of the body. Only when the empowerment phase of the technique is achieved will he be able to get a steady stream of power without harvesting it. He will also be able to supply the gate with external momentum from outside the body.