How does one calm one's bodily fabrications?
The Visuddhimagga ( http://www.accesstoinsight.org/lib/authors/nanamoli/PathofPurification2011.pdf ) starting on page 268 gives a detailed explanation of Anapanasati Sutta MN 118 ( http://suttacentral.net/en/mn118 ). The specific method is the 8 steps starting on Vism. page 272..