Looks good !
Although I am trying to find out specifically about whether 23, 28 and 33 day cycles have or has been measured in some form from anywhere.
Although most people will deny the existence of this, I am a firm believer in the existence of the rhythms after researching it for 20 years...
Biorhythms have been "known" about for many decades
There are 3 rhythms - 23, 28 and 33 day cycles - physical, emotional and mental respectively.
biorhythms pic
These must have been calculated using observation of human qualities and noting them down
My question is - are there any external...