Anapanasati
Ānāpānasati (Pali; Sanskrit: ānāpānasmṛti; Chinese: 安那般那; Pīnyīn: ānnàbānnà; Sinhala: ආනා පානා සති), meaning 'mindfulness of breathing' ("sati" means mindfulness; "ānāpāna" refers to inhalation and exhalation), is a form of Buddhist meditation now common to the Tibetan, Zen, Tiantai, and Theravada schools of Buddhism, as well as western-based mindfulness programs.
According to tradition, Anapanasati was originally taught by the Buddha in several sutras including the Ānāpānasati Sutta. (MN 118) Anapanasati means to feel the sensations caused by the movements of the breath in the body, as is practiced in the context of mindfulness.
Read more about Anapanasati: Origins in Buddhism, Stages of Ānāpānasati, In The Theravada Tradition, In The Chinese Tradition, In The Indo-Tibetan Tradition