Modern yoga, like Pilates, is a mind-and-body discipline, though yoga classes are more likely to address spiritual aspects explicitly. Some poses are similar in the two disciplines; for example, open leg balance closely resembles Navasana, boat pose; roll over is similar to Halasana, plough pose; and swan and push-up are essentially identical to Bhujangasana, cobra pose and Chaturanga Dandasana, low plank pose, respectively. Both disciplines develop strength, flexibility, and fitness. Pilates, however, emphasises core strength where yoga emphasizes flexibility.