Hatha yoga postures come in numerous forms. For a beginner, states the historian of religion Mircea Eliade, these "asanas" are uncomfortable, typically difficult, cause the body shakes and typically unbearable to hold for extended periods of time. However, with repetition and persistence, as the muscle tone improves, the effort reduces and posture improves. According to the Hatha yoga texts, each posture becomes perfect when the "effort disappears", one no longer thinks about the posture and one's body position, breathes normally per "pranayama", and is able to dwell in one's meditation ("anantasamapattibhyam"). The "asanas" discussed in different Hatha yoga texts vary significantly. Unlike
Karma in Tibetan Buddhism the spiritual friend, then listen to teachings and reflect on them. When karmic obstacles arise, the student may generate confidence in karmic laws; regret past actions and the student may apply other appropriate remedies. Continuing harmful karma may lead to lower rebirth. Lessening past results with meritorious activity results in higher rebirths. Students achieving pure karma will be welcomed to go directly to liberation in any instant. Since harmful actions are rooted in negative emotions and these are rooted in the self belief, some realize no-self to believe and then end both karma and the emotions. Students may then attain