Hatha yoga yoga developed as a branch of the more ancient yoga. According to P.V. Kane, Patanjali yoga concentrates more on the yoga of the mind, while Hatha yoga focuses on body and health. Some Hindu texts do not recognize this distinction. For example, the "Yogatattva Upanishad" teaches a system that includes all aspects of the "Yogasutras" of Patanjali, and all additional elements of Hatha yoga practice. The impact of Hatha yoga on physical and mental health has been a topic of systematic studies. Some scholars state that a regular and proper yoga practice yields health benefits. Others state that the results
Bhagavad Gita that "when one sees the entire universe as pervaded by the single Universal Spirit [Krishna], one contemplates, marvels, and falls in love with its amazing glory. [...] Having experienced that Truth oneself, all doubts are dispelled. This is how the flower of devotion evolves into the fruit of knowledge." The "Gita" teaches several spiritual paths – jnana, bhakti and karma – to the divine. However, states Fowler, it "does not raise any of these to a status that excludes the others". The theme that unites these paths in the "Gita" is "inner renunciation" where one is unattached to personal rewards