For example, anabolic steroids such as Testosterone have a tendency to promote water retention through their ability to be aromatized into Estrogen via the aromatase enzyme. While such an effect might not be a concern for a strength athlete or a powerlifter (such an effect might even be beneficial or desired in such sports), this is not a desired effect for athletes involved in sports that involve speed and swiftness, such as sprinting. Instead, a sprinter, for example, would more likely opt for an anabolic steroid such as Stanozolol ( Winstrol ) or Oxandrolone ( Anavar ), which are two anabolic steroids unable to convert into Estrogen and therefore the issue of water retention, and therefore the issue of added weight that would slow the athlete down is avoided. Many athletes may also elect to ‘stack’ anabolic steroids in a given cycle (stacking refers to the practice of combining more than one anabolic steroid in a cycle). In the case of cycle stacks, an individual might be able to increase the synergy and synergistic effects between the anabolic steroids to create a highly anabolic environment or to create a stack that might assist the user in favoring certain particular athletic or physique goals. These are some of the major reasons as to why the development of different types of steroids has been done.
In his next fight at UFC 73 on July 7, 2007, Silva successfully defended his title against Nate Marquardt , winning by TKO at 4:50 in the first round. Three months later, on October 20, 2007, at UFC 77 , Silva fought a title defense rematch against Rich Franklin, in Franklin's hometown of Cincinnati , Ohio, at the . Bank Arena .  Silva defended his belt by defeating Franklin via TKO in the 2nd round. On March 1, 2008, at UFC 82 Silva fought Pride Middleweight champion Dan Henderson , in a title unification bout (UFC and Pride titles on the line). Henderson was believed to have the edge on the ground, having competed in the 1992 and 1996 Summer Olympics in Greco-Roman wrestling . Silva defended his title by defeating Henderson via rear naked choke in the 2nd round. At UFC Fight Night: Silva vs. Irvin on July 19, 2008, Silva made his debut at Light Heavyweight (205 lb (93 kg)) in a bout against James Irvin . Silva won via KO due to strikes in 1:01 of the first round after catching Irvin's attempted leg kick with his left arm and delivering a straight right that dropped Irvin to the mat, Silva then finished a prone Irvin with a blitz of punches to the head.     Irvin later tested positive for methadone and oxymorphone. 
Halotestex Tablets are not grandly popular among performance enhancing athletes due to the simple reason that it only brings a few beneficial traits for most individuals which is not worth taking a risk for a compound like halotestin whose risks far outweigh the rewards. There are many more other steroids with almost similar and more benefits having less side-effects. However, it can be used by the competitive athlete or bodybuilder for enhancing aggression and push that is sometimes required to complete a brutal contest diet. Having said that, still one needs to use halotestin with utmost caution and not forget its long-term effects.