Specificity is important to a fitness program because it

Specificity is a Training principle that states whatever you do in your training, should be relevant for your desired outcome

It's important because your whole fitness program should be adjusted based on that specificity.

For example , if you're a rowing athlete, you have to specifically adjust your training program in order to increase upper body strength rather than the lower body

You should only go in for less than 10 minutes at a time, or avoid them altogether, especially in the early weeks. studies have shown an increased risk for birth defects in babies of women who had an elevated temperature before 7 weeks of  pregnancy.

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);