5. Better posture, stronger back.
One of the most common back issues nowadays are related to disc diseases. Most people lead sedentary lives. We tend to move too little which causes different kinds of backache. Planking helps to develop additional support for your lower back. Besides flatter abdominals you will feel that the pain between your shoulders blades vanishes. And, naturally, when your back and shoulders are healthy, your posture improves, too.
6. Harmless exercising.
Planking does not do any damage. It is a safe exercise that can be practiced every day, though it is essential to do it correctly. By the way, most professional sportsmen include the plank into their programs and find this exercise of great use while preparing for competitions.