How does Andrew Solomon build ethos in his speech about how the worst moments in our life make us who we are?

What is the difference in the phisical activity requirements for achieving healt benefits and performance?

Brian said that when you get your body broken such as a arm or leg. it means your bones break to pieces and must do surgery or get a cast to fix it.is it true or false?

Amalignant tumor that originates within glandular tissue is called