Weightlifting is more grit than glamour.Athletes grunt, yell and do whatever it takes to prepare themselves to lift heavy weight on the worlds biggest stage. Sometimes their adrenaline-fueled screams are louder than the sound of the barbell slamming onto the platform.Leave the silence for other sports.Weightlifting is one of the oldest sports in the Olympics and while its one of the lesser knowns, its quite a crowd pleaser. Just listen to the way spectators react when an athlete stomps their feet and shouts before a lift.Competition starts Aug. 6 in Rio de Janeiro. Here are some things to know:THE RULESWeightlifters get three attempts in each of the two types of lift. In the snatch, the bar is lifted overhead in one continuous motion. The clean and jerk is performed in two moves: the lifter first pulls the bar to shoulder height while in a squat, then rises and pushes it overhead.The elbows need to lock for a successful lift. The total score combines the weights lifted in the best snatch and the best clean and jerk.Each athlete only gets six lifts, so picking the right weights is crucial. If they start too low, medals could be out of reach. If they start too high, they may crash out without a result.DEFENDING CHAMPIONSNorth Koreas Om Yun-chol is the front-runner to win another gold in mens 56-kilogram category, the lightest weight class. Chinas Liao Hui, a 2008 champion at 69 kg, returns after missing the London Games because of a doping ban. Lu Xiaojun, another Chinese champ, is a best bet to win at 77 kg. On the womens side, North Koreas Rim Jong Sim (69 kg) returns to defend her gold.DOPING SUSPENSIONSBulgarias team was barred from the Olympics after 11 of its lifters received doping bans last year. Yulia Kalina, a Ukrainian bronze winner in the womens 58-kilogram division, was the first athlete disqualified. Four Olympic gold medalists from Kazakhstan and medalists from Russia, Ukraine, Azerbaijan and Belarus have already been provisionally suspended by the International Weightlifting Federation. Entire teams from Russia, Kazakhstan, Belarus and Azerbaijan could be barred because three or more positive cases from each country were discovered during retests.WINNING MEDALSChina led the way in 2012 with seven medals, including five gold. Russia was next with six, five silver and one bronze. Kazakhstan won four gold.TEAM USAMorghan King, Jenny Arthur, Sarah Robles and Kendrick Farris will represent the United States. Robles finished seventh in 2012 in the super heavyweight class. Arthur was the first American to qualify and will compete as a heavyweight. King (48 kg) is also making her Olympic debut. Farris, the only mens representative, finished eighth in 2008 and 10th in 2012.THE VENUERiocentro already hosted weightlifting competitions at the 2007 Pan-American Games. 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"Demp (Ryan Dempster) came out before he went to the bullpen and was just yelling that they lost. Nick Foles Youth Jersey . Detroit and Boston are deadlocked, 1-1, and Tigers manager Jim Leyland could be forgiven if he was caught rationalizing instead of dissecting how his club could blow a 5-1 lead late in Game 2. Nick Foles Womens Jersey . Brazilian national coach Luiz Felipe Scolari has confirmed that the veteran goalkeeper is set to join Toronto on loan, saying it will help him be ready for the World Cup.KANSAS CITY, Mo. -- The play that may have netted Chiefs safety Eric Berry the AFC defensive player of the week award was a game-changing pick-six in the fourth quarter that helped Kansas City rally past Carolina.Its not the play Berry remembers most fondly from last weekend.The Chiefs were trailing 17-3 when the Panthers began a march that ultimately lasted 20 plays and chewed up more than 10 minutes. But in what is becoming very Chiefs-like fashion, Kansas City responded with back-to-back sacks to not only force fourth down but take Carolina out of field-goal range.That was my favorite part of the game, Berry said. Those are the little things that people dont notice, but those are the things that set you up.The Chiefs (7-2) have ripped off five straight wins to climb into a tie atop the AFC West and get into position for a first-round playoff bye. And theyve done it with a defense that has done everything -- big things and little -- so well that the Chiefs have been able to overcome a lackluster offense.Along with turning back Carolinas potentially game-sealing drive, and Berrys interception return for a touchdown, Marcus Peters stripped Panthers wide receiver Kelvin Benjamin in the final minute to give Kansas City kicker Cairo Santos a chance to knock through the winning field goal on the road.As a result, the Chiefs won a game in which they converted just two third downs, never scored on three trips inside the red zone and wound up with less than 260 yards of total offense.We practice very hard, put in a lot of work and a lot of hours, and really putting in more than is required, Berry said. So were going to keep putting those things in and hope itll pay off for us.Its not like the Chiefs are the 2016 version of the Steel Curtain, though. Theyre more like a rubber band, stretching and yielding but seemingly always springing back to shape.Part of that is due to turnovers: They are a league-leading plus-14 in turnover margin.This team has such a great belief, whether its offense, defense or special teams, this team takes so much pride in playing together as a team, Chiefs quarterback Alex Smith said. We find a way, lean on one another and being in those types of environments helps.dddddddddddd The more you play in types of games, not just this year but for the guys that have been here, that often contributes to when it does get down to crunch time and when you fall behind. Theres never a panic, we just go about our business.Smith acknowledged that the defense cant keep bailing them out, though, and pointed to third downs and the red zone as areas where Kansas City needs to make crucial improvement. The Chiefs are converting just 34.7 percent of third downs, which is 29th out of 32 teams. And they are scoring touchdowns on 40 percent of red-zone trips, which is tied for 30th.You cant beat yourself, especially in this kind of offense, Chiefs wide receiver Chris Conley said. You cant have false starts, mental errors. You have to execute.But if not on offense, at least on defense. And so far that hasnt been a problem.Kansas City could be getting even better, too, if four-time Pro Bowl linebacker Justin Houston comes back at close to 100 percent. Houston has been out since surgery in February to repair the ACL in his left knee, and there have been indications this week that he could make his season debut on Sunday at home against Tampa Bay.Well just see. Hes feeling pretty good, coach Andy Reid said. Well get him out there, see what he can do, move him around a little bit. At any point it becomes an issue, well step him back.Besides, what rush is there the way the Chiefs are playing these days?Game notesRB Jamaal Charles had had arthroscopic surgery on his left knee Monday, trainer Rick Burkholder said. Charles had a similar procedure on his right knee a few weeks ago. Both have had ACL reconstructions and had been causing Charles pain this season. He remains on injured reserve. ... LB Tamba Hali (knee soreness) and DT Dontari Poe (knee swelling) returned to practice Thursday. WR Jeremy Maclin (groin), DT Jaye Howard (hip flexor), CB Marcus Peters (hip pointer) and LB Derrick Johnson (hamstring spasms) remained out.---For more NFL coverage: http://www.pro32.ap.org and http://www.twitter.com/AP-NFL ' ' '