Generally is is by the date, few people actually know the exact time they were born.
from the day they was born
Training thrice a week for an hour is ideal for all but if your goal is gaining muscle at young age, training for one and half hour a day in not uncommon. But as and when you increase the volume of training, protein and fiber consumption along with fluid consumption should be increased
$192.31 per hour (based on a standard 5-day, 40-hour work week).
they should exercise 1 hour a day everyday
age, gender and activity level
first birthday
The death rate per hour worldwide is approximately 6,321 deaths per hour, based on an estimated global death rate of around 151,600 people per day. This figure can vary based on factors such as population size, healthcare infrastructure, and other variables.
Caloric intake isn't based on age it is based on weight and activity level
climate
December 18th, 1975 (age 33)
=Age changes because the day of your birth comes every year not everyday so the age of a kid or an adult will change constantly every year on the day you were born.=
Since a day has 24 hours, each hour is 1/24 of a day.