In answer to Arjuna's question, Krsna clearly says that he who concentrates upon His personal form and who worships Him with faith and devotion is to be considered most perfect in yoga. For one in such Krsna consciousness there are no material activities because everything is done by Krsna. A pure devotee is constantly engaged. Sometimes he chants, sometimes he hears or reads books about Krsna, or sometimes he cooks prasadam or goes to the marketplace to purchase something for Krsna, or sometimes he washes the temple or the dishes--whatever he does, he does not let a single moment pass without devoting his activities to Krsna. Such action is in full samadhi.