_ are needed to maintain energy levels 
Ligaments follicles hydration environment glucose pores exercise Arteries
A B C D E F G H
Energy levels can plummet due to lack of oxygen-rich red blood cells.
Arteries are needed to maintain energy levels 
_ are needed to maintain energy levels  (A) Ligaments (B) follicles (C) hydration (D) environment (E) glucose (F) pores (G) exercise (H) Arteries