ShanYin wrote: It says it should be done as often as one would brush ones teeth.
Praying wasn't taught by the Buddha. There's nothing in the cosmos worth praying to. Theravada is based on the Pali suttas and you will not find prayer in the Buddha's teachings recorded in the suttas.
Chanting was occasionally taught by the Buddha, but it's not a core teaching in any sense, and is only of benefit when the words are understood. Usually the chanting done in monasteries is an expression of gratitude and a reaffirmation of the practices undertaken.
99% of the teachings are about practice and training the mind.