Another advantage of trusting in H'shem is the emancipation of the soul and body from wearying occupations and from professions that exhaust the body and avoidance of both the service of kings' enforcement of their laws and the oppression of their subjects. One who trusts in GD chooses a source of livelihood that offers his body more rest and acquires for him a good name that affords him leisure for reflection, is most conducive to fulfilling his religious duties, and is in harmony with his beliefs. pg 363
Rav Moshe Trani, Iggeres Derech Hashem writes.
One should make some movement with his body at the conclusion of every bracha to remind himself to concentrate (Pathway to Prayer)