Note An empty result set is not the same as a null value. For a scrollable cursor, all the rows in the result set are returned to the calling batch, procedure, or trigger when the procedure exits. When returned, the cursor position is left at the position of the last fetch executed in the procedure.
The wall sit strengthens your lower body. Your quadriceps on the fronts of your upper legs remain in a static contraction to support the wall sit. The hamstrings on the backs of your upper legs also remain contracted as you sit. Your glutes contract during the wall sit to keep your body stable and balanced.
How Your Leg Muscles Work. If you're lounging as you read this, the next sentence may scare you sit-less. Sitting is the new smoking; it's just as insidious, says Marc Hamilton, PhD, a physiology professor at the Pennington Biomedical Research Center in Baton Rouge, Louisiana. Hamilton is making a point about how so many Americans are letting their leg muscles â and therefore their bodies â turn to mush.