The Yogatattva Upanishad is classified as a minor Upanishad in the Advaita canon, dealing with the practices of yoga. It has lists of troubles and afflictions, known as upasarga (Sanskrit, "affliction"), that a practitioner of yoga should strive to overcome, such as:
dosha (20): hunger, thirst, excitement, grief, anger, greed, etc.
vighna (5}: sloth, boastfulness, bad company, cultivation of mantras for wrong reasons, and longing for women.
The Yogatattva Upanishad is also known as one of the early sources of tantric ideas related to chakras.