Ashtanga Yoga -

A full Primary Series takes 75 to 90 minutes. It is a complete system: forward folds, backbends, twists, inversions, and core. You don't need a gym membership or a HIIT class. This is the full body overhaul.

However, the physical practice we know today was revived and codified by Sri K. Pattabhi Jois in the 20th century. His system is simple in concept, brutal in execution: ashtanga yoga

Unlike a Vinyasa flow class where the teacher decides the sequence, in Ashtanga, the sequence is the teacher. You learn it, memorize it, and practice it six days a week (rest on Saturdays and moon days). What separates Ashtanga from a calisthenics workout are three internal techniques practiced simultaneously. Without these, it’s just gymnastics. A full Primary Series takes 75 to 90 minutes