Thank you Portia and Lizbeth for this very informative tutorial demonstrating the different levels of each exercise. I teach many mat classes that are "all level" and as an instructor teaching and demonstrating these different levels while keeping a constant flow of the class - is a challenge as well. Beautifully done!!
Thank you everyone for your positive feedback, I'm so happy that this information is useful to you! Marketa, in regards to people who tend to hyperextend their elbows, try getting them to engage their upper arms (especially the triceps). Follow up with tactical feedback by manually cueing the Serratus to wrap & support, guiding them to push the floor away. If they are still hyperextend, then try modifying by placing them in a hover (bend the elbows, place the elbows & forearms on the floor, elbows under under the shoulders). This is a good modification for side plank also.