Sara rieber "extension of the mind"
The model is practicing a modified version of Supta Padangusthasana or reclining big toe pose. It is a gentle pose that helps stretch the low back, hips, and legs. This is a pose that is very important to take it easy. As it can help enormously with our back hips and legs, it can also do the opposite if our body isn't ready.
Allowing for modifications if needed is always great. If you don't have a strap like the gal in the drawing, you can use your hands to wrap around the back of the thigh for support. If the hamstrings are tight, you may find the leg to be more horizontal than vertical. That's ok. In order to allow the low back and hips to be grounded, you can keep the resting leg bent with the foot grounded on the floor as pictured. This will also put less stress on the low back.
Supta Padangusthasana is a difficult pose for most of us. Our hamstrings tend to get very tight from our everyday routines of sitting and or standing. Even if we are althletic and run on a daily basis, the hamstrings become tight.
This pose will make us aware not only of our physical tensions, but also our mental tensions. Our body is an extension of the mind. Our emotions reflect our physical being. Practicing this pose is one way of finding this connection.