On the devotion on 9/9, commenter Scott shows excellent insight into the power of prayer and how it not only aligns your mind but whole body with the will of the Lord:
Prayer is not always words, just sitting, [but] meditating concentrate on breathing, getting in tuned to the rhythm of your heartbeat. The rhythm of your heartbeat also connects to the heartbeat of the Spirit who gives us the power of prayer and reflection always. There is power in prayer for the powerless united in love.