Which of the following is a common precaution for people with known health issues?

a. avoid exercising alone
b. loosen stiff joints before exercise
c. check blood sugar levels often
d. avoid high-impact activities

According to proper standing posture, from a side view, which parts of the body should be aligned? a. ear, shoulder, hip, knee, and ankle b. stomach, hip, knee, and ankle c. nose, shoulder, hip, knee d. ear, shoulder, fingers, ankle