While every teacher has his or her own style, each class will begin with centering, followed by a warm up, which may include sun salutations or sun breaths. The teacher will lead the class through a series of standing and seated postures (asanas), according to the class level. Asanas will be presented with more and less challenging options. Straps, blocks or blankets may also be offered to make the poses as accessible as possible for all students. Classes will conclude with a final rest (savasana). Some classes offer an extended savasana, or Yoga Nidra, for an even deeper relaxation.