I display biorhythm.

I slide a graph and can change an indication date.

Physical -> Cycle of 23 days
Sensitivity -> Cycle of 28 days
Intellectual -> Cycle of 33 days
Originally -> Original cycle

A yellow line is a indication date.

MENU key
[Original cycle]
When I display an original cycle, I set periods more than 1.
A cycle is not displayed in an original cycle during 0 days.
[Birthday]
I set the date of birth.