Meninges- three layers of connective tissue
1) Dura Mater: tough top layer
2) Arachnoid Mater: middle; collagen/elastic fibers; spiderweb effect
3) Pia Mater: delicate and thin; bottom transparent layer made up of elastic/collagen fibers; blood vessels
        
             
        
        
        
I believe teens definitely are most concerned about muscular strength. They are more worried about that because they want to protect themselves, impress others, sometimes kids just want to bulk up to not look so wimpy, etc.
I would have to say teens are less worried about flexibility because when you have mussels why worry about doing the splits or putting your leg up to your head. One thing will always distract you from the rest.  
 
        
             
        
        
        
You already had the answer right? lol
Practicing good hygiene
Avoiding contact with vectors
Boosting your immune system with immunizationsPracticing good hygiene
Avoiding contact with vectors
Boosting your immune system with immunizations