While two of the eight branches of classical Ayurveda deal with surgery (Śalya-cikitsā, Śālākya-tantra), contemporary Ayurvedic theory tends to emphasise that building a healthy metabolic system, attaining good digestion and proper excretion lead to vitality.Ayurveda also focuses on exercise, yoga, and meditation. To maintain health, a Sattvic diet can be prescribed to the patient.Concepts of Dinacharya are followed in Ayurveda; Dinacharya stresses the importance of natural cycles (waking, sleeping, working, meditation etc.) for a healthy living. Hygiene, too, is a central practice of Ayurvedic medicine. Hygienic living involves regular bathing, cleansing of teeth, skin care, and eye washing.PanchakarmaAccording to some experts, the practice of the cleansing practices known as panchakarma (Devanāgarī: पंचकर्म)) is a therapeutic way of eliminating toxic elements from the body. 26 Panchakarma includes Vamana, Virechana, Basti, Nasya and Raktamokshana. Panchakarma is preceded by Poorva karma (Preparatory Step)and is followed by Paschat karma and Peyadi karma..