In Ashtanga yoga we usually practice vinyasas between the asanas. Vinyasas are dynamic movements that connect the asanas. Usually we jump forward from downward dog. It's worth to have a closer look. How many different ways exist to jump forward. I love to have a survey:
Primary series has three different ways to jump forward:
1. The classic form is to jump forward between the arms without touching the floor. Legs are crossed or stretched when jumping through. Then the legs stretch and quickly one has to prepare the next pose. I prefer to jump through with crossed legs. It has something to to with the body portions.
2. In order to prepare tirieng mukha eka pada paschimottanasa the one leg bends and the toes point backwards, the other leg swings through and stretches forward.
3. One flies forward and the legs wrap around the arms, the feet don't touch the floor. Three asanas require this: bhuja pidasana, kurmasana and supta kurmasana.
Second series has some more variations:
4. I mention them here, but they are easy. One jumps forward and lands on the flat feet (pashasana follows) or the knees (ushtrasana ff.)
5. The most challenging forward jump seems to me to jump from downward dog into bakasana.
6. Another variation is to jump forward and one leg swings through the arms the other leg lands on the upper arm (preparation for eka pada sirsasana).
7. To prepare parighasana, one leg bends and the toes point backwards, the other leg stretches to the side.
There is a lot to exercise. Ashtanga yoga is never boring.