In yoga, the term hatha is much broader than other styles and as one of the oldest forms of yoga, it also has several sub-styles within it. The oldest text that describes hatha yoga Amṛtasiddhi, dates back to the 11th-century. Generally speaking, Hatha makes you focus only on breathing and each individual pose. Outside of India, the term ‘Hatha’ often refers to any kind of yoga that doesn’t have another specific name (i.e. Anusara, Bikram, etc.) so different hatha classes can have a lot of variation between them. Sometimes, it’s used as a catch-all term for yoga in general.
Hatha is the most recommended style for someone beginning their yoga practice. These classes are slower and less strenuous than other styles. During a Hatha yoga class, you won’t work up a sweat, but you will feel looser and more relaxed.