The five most popular questions about the content of David Blaine Do Not Attempt that focus on the story itself are:

1. How does David Blaine prepare and apply science and practice to perform dangerous feats like diving on broken glass repeatedly without injury?
2. What are some of the most nerve-wracking or terrifying moments David Blaine experiences during the series, such as smashing a glass bottle on his head?
3. Which real feats of magic and extraordinary physical and mental skills performed by others does David Blaine seek out and attempt in the series?
4. What are some of the cultural, historical, and ritualistic contexts behind the astonishing talents and feats featured in the show?
5. What are some of the most speechless or shocking moments witnessed by David Blaine, such as people setting fire on their heads or extreme cliff jumps?

These questions reflect viewers' curiosity about the detailed experiences, challenges, and inspirations behind the feats and the people featured in the series, rather than the overall plot or conclusion.