At Zazen, students relax their bodies and focus their minds during sessions of Zen Buddhist seated meditation, the soothing practice for which the center is named. But Zazen works to cultivate calm with other services as well. Sensory-deprivation tanks block out distracting external stimuli as guests float in 10 inches of warm saltwater, a practice many say helps them grow their awareness of the present moment. Massage sessions focus on freeing the body from tension, so it can be experienced as spaciousness rather than constraint. Yoga classes also help guests become mindful, filling hearts and limbs with enough calm energy to quiet a bawling infant with a single, whispered "shhh."