Critical Day

The theory of biorhythms believes that the life of an individual is affected by rhythmic biological cycles.
These cycles (physical, emotional, mental) begin at birth and oscillate in a consistent manner (sine waves) in the course of life.
The field is similar to astrology and then approach with the right attitude.
This app intends to give an indication of attention to those days that the theory of biorhythms are defined as critical.
What do in these days?
If you can avoid the most demanding situations (depending on the otherwise provided greater biorhythm cycle concerned) attention to what you do.
Optional data necessary for the app:
Date birthnmonth and year in which the making search critical days.
The final list presented by the app lists for the month of the year selected a list of days with specified critical biorhythm cycles.
The app will trigger a notification at 9:00 of the critical day.