Fire Physio Toning Lab Physio Toning Lab is fiery Vinyasa flow. Repetitive, precise muscle manipulation builds heat in the body while breathwork guides the mind toward stillness. We create fire in the body to let wandering thoughts turn to ash. We start by opening our body to release tension we hold inside, followed by energizing flow. When the body is warm and open, repetition of small and large muscular movements improve muscle tone. Surface muscles of the body are supported by deeper muscles, and this class lets us work on those deepest layers.