While much attention from the media focuses on the negative aspects of PEDs, there are some proponents of substance abuse who point out the positive aspects of the issue.  First, doping can increase oxygen delivery to muscles and improve performance (10).  Improved performance is the number one positive effect of substance abuse.  Similarly, substances such as steroids,  “can prevent muscle tears, (and) prevent the muscle sheath from shredding” (12).  These effects can prevent athletes from injuring themselves in some circumstances and can improve healing in rehabilitation (20).  Additionally, performance- enhancing drugs are not necessarily bad because athletes are able to receive drugs for injuries, and drawling a line to decide what is and isn’t allowed may be difficult.  Allowing performance-enhancing drugs would be much more effective in sports to avoid controversy and allow athletes to act how they want.  In reality, life is not fair and some individuals will always have an advantage over others (11).  In this way, performance-enhancing drugs are simply another aspect to consider in the equation regarding how athletes train and what makes some athletes better than others.  The athletes have a personal choice to take the drugs or to avoid the drugs, and they are aware of the side effects.  Additionally and finally, athletes taking these drugs are giving the spectators watching the sports exactly what they want (13).  Fans want to see baseball players hitting home runs and football players running faster.  It is a natural instinct to want to see good performances.  Substance abuse would create a spectacle for fans by enabling athletes to make bigger plays.  Allowing performance-enhancing drugs would take away the negative stigma as well.  Finally, allowing doping would allow for leagues to save money by eliminating all drug testing (20).