2. what is the formula for calculating body mass
index? what does it mean for someone to have a
healthy body mass index?

BMI = kg/m2 where kg is a person's weight in kilograms and m2 is their height in metres squared.
A healthy body mass index would be between 18.5 to 24.9.
For someone to have a healthy body mass index it would mean that your BMI wouldn’t be considered underweight or be considered overweight. (Between the two numbers)

Answeralong with the tissue lining,the blood,tissue,and unfertilized egg leave the uterus,going through the vagina on the way out of the body,(menstrual period);

Frequency of exercise, intensity, time allotted, and type of exercise