M. Night Shyamalan's claim to fame.
A rapid switch of these may prove catastrophic.
You can do this at home, at the gym, and now even on a bus.
The Notebook, Clueless, and Twilight are some examples of this.
I consist of each of these things and at my core one more
What am I?
Hint:
If I were to remove two lines from the first four lines the answer would be the same but different
Riddle changes since first posting:
- Added the word rapid to the second line
- Changed "all" to "each of" in the last line