Does the human body really have a 24-hour body clock?

Does the human body really have a 24 hour body clock

There is a time for everything. For each activity every day, we know when is the right time to do it.  The right timing always matters. The concept of time started since early humans first noticed the regular movement of the Sun and the stars. Some 30 000 years ago, prehistoric people … Read more

Why dates and years are different in different calendars?

Why dates and years are different in different calendars?

Different timekeeping methods existed from the prehistoric up until the Neolithic period. The units utilized for the timekeeping means of various historical societies can be classified into the day, solar year, and lunation. Since the units used are diverse, the dates and years in different calendars are also varied. The first discovered … Read more