Explain the items that make up a work triangle

While ice skating, alice slipped and injured her knee. what is one way alice might prevented this injury?

Nina has the flu and a high fever. her immune system is exhibiting the line of defense. this defense is part of immunity.

What should you not do when doing abdominal workouts? a. keep your chin off your chest b. keep your head aligned with the spine c. put pressure on your neck d. all of the above