Diver Tracy Bonner, 26, one of the USA’s top Olympic contenders, received official notification Monday that her suspension from competition is over. In August, Bonner was suspended for a year by FINA after she tested positive for the stimulant dextroamphetamine. The drug is contained in a prescription Bonner takes for narcolepsy, a disorder of the brain and nervous system that causes overwhelming bouts of sleepiness and sometimes near-paralyzing bouts of muscle weakness called cataplexy. Stimulants are considered performance-enhancing and are banned by the Olympics and Olympic sports federations.