Ashtanga "If you're looking for a relaxed cruise-ship type of yoga, Ashtanga isn't for you," warns Ingalls. Ashtanga offers a fast-paced class that repeats one or two of six separate sequenced movements. Each sequence contains up to 50 standing or floor-based postures. The movements strengthen muscles to increase flexibility. Spectacular bursts of movement that signify Ashtanga's style can intimidate even the most athletic beginner.