Which technology keeps track of heart rate during a workout?

Which term defines one's age as measured in years? chronological age biological age social age mental age

What do you do if a teacher is unjustly grading you, but also id discriminating because your a girl in a dyn criminal justice class? its almost starting to become harassment because he wont leave me alone about it

According to bowlby which of the following is not required in order for infants to form healthy attachments with their parents