NON SUIT. The name of a judgment given against a plaintiff, when be is unable to prove his case, or when he refuses or neglects to proceed to the trial of a cause after it has been put at issue, without determining such issue. It is either voluntary or involuntary.
About the Plank Exercise: The plank exercise is a great way to build endurance in the abdominals as well as the back, and the stabilizer muscles. Building on the core muscles this exercise can prove quite more effective than most other ab exercises in a shorter period of time. Muscles Used in the Plank Exercise: All of your core muscles are used during the plank exercise including: rectus abdominus, transverse abdominals, lower back extensors, and even a slight use of the obliques and abdominals groups.
You may be learning the plank exercise for the first time or you may already use it regularly in your workouts. I have found it to be one of the most effective abs exercises I use. In fact, one research study found it to rank highly at #4 out of 13 exercises for the oblique abdominal muscles. Not only does it strengthen the abdominal muscles, but also works all the core muscles -- the back, hips, etc. I recommend starting with the first exercise and gradually increasing the seconds you can hold the position. Once you feel comfortable with the plank on your elbows, progress to the next exercise.