A. Stretching 
because stretching is making something be able to go longer or wider without breaking. <span />
        
                    
             
        
        
        
10. I believe it’s A, or the FIT principle
11. Intensity best describes a heavier workload
12. Length, because your enlongating the time
13. D, just look up the definition of frequency
14. B, again look up the definition of progression
15. B, if you start hard all at once you will injure yourself so a progression is the best way
16. B. All the other options have unrelated muscles and exercises
17. B, would be the only way to improve in fitness
Hope I helped :) these were pretty basic, most were only vocabulary based
        
             
        
        
        
For a parent to help their infant develop an early age self-esteem, then the parent could: give the child puzzles, coloring books, and other things that a parent would usually give their child... but the purpose of this, is not only to ceep the child preoccupied, but for the child to feel like he/she is acompleshing something important... especialy if the parent makes a bit of a fuss over how good the accomplishment is... Also, the parent should defenetly give their child enough attention, so he/she doesn't feel neglected or unimportant. Mainly, the parent should find something for the child to do that is a challenge, but eventually the child can overcome; and therefore feel self-esteem. 
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<span>Training only a few muscle groups leads to imbalances and an increased risk of injury. False !</span>
        
                    
             
        
        
        
It is the study of forms of things,in particular. or the study of the forms of words