The studies also suggest that the 24-hour circadian clock found in human cells is the same as that found in algae, and dates back millions of years to early life on earth, they said.

Ancient wisdom asserts there is an everyday rhythm to the days. Aligning when you do what is called dinacharya, or the ...

The article explores the historical roots and practical applications of the 12-hour and 24-hour time formats. Originating ...