<span>Define adolescence and identify the major physical changes that occur during this period of life.
Adolescence is accompanied by many changes: physical, psychological, emotional, sexual.
Examples of typical changes in boys include:
- The enlargement of the shoulders and torso;
- The transformation of the voice;
- The development of hair (torso, arms, face);
- The development of the genital organs;
- The first erections.
And on the girls side :
- Breast development;
- The onset of menstruation;
- <span>The enlargement of the hips</span></span>
Health - related fitness.
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C. anyone who is or has been sexually active
<span>Heart Rate Reserve, HRR. Heart rate reserve (HRR) is the difference between resting heart rate (HR<span>rest) and maximum heart rate</span> (HRmax). Heart rate reserve is used when determining exercise heart rates. The Karvonen formula is used to calculate exercise heart rate at a given percentage training intensity.</span>
From 1918-1919 it is the deadliest in modern history it infected 500 million people world wide about 1/3 of the population at the time and killed 20 million to 50 million people