Out of the Hindu tradition comes yogic meditation, which is also purely concentrative. The traditional basic exercises consist of focusing the mind on a single object — a stone, a candle flame, a syllable, or whatever — and not allowing it to wander. Having acquired the basic skill, the yogi proceeds to expand his practice by taking on more complex objects of meditation — chants, colorful religious images, energy channels in the body, and so forth. Still, no matter how complex the object of meditation, the meditation itself remains purely an exercise in concentration.