Most teenagers should exercise at least an hour each day.

Building muscle has which of the following effects? it increases the metabolic rate. it relieves pressure on the joints. it slows weight loss considerably.

Which is a physical sign of stress? a: unexplained euphoria b: feelings of invincibility c: inability to sleep d: visual hallucinations

Which person should increase calorie intake due to a lifestyle choice? a. an adult who is often sedentary b.an athlete c.a student getting ready for school exams d.an older woman