Question: A luger must have strength in what body parts?
About the article "Luge", section "Training".

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The sport of luge requires an athlete to balance mental and physical fitness.
To become an elite luger, a competitor must begin training at an early age and spend decades honing their skills.
Physically, a luger must have strong neck, upper body, abdominal, and thigh muscles.
Strength training is essential to withstand the extreme G-forces of tight turns at high speeds.
Since lugers have very little protection other than a visor and helmet, they must be able to endure the physical pounding administered by the track when mistakes are made.
Mentally a luger must maintain total focus as they steer their sled through more than a kilometer of curves and straights at high speed.
Dozens of subtle movements and weight shifts are required to find the perfect line down the track.
Consistency is essential for success.
Sled maintenance is also an important element for success.
Serious lugers spend hours meticulously sanding their "steels," and making other important adjustments and repairs to their sleds.
No luger can possibly achieve elite status without working closely with an experienced coaching staff, implementing suggestions and fine tuning technique.
Other lugers will often give tips that can improve a slider's ability to find the "sweet spot" on the track.
Though luge is a winter sport, it requires daily, year-round training.
Free weights are recommended over machine weights for almost all athletes.
When one uses free weights (barbells, dumbbells, medicine balls, rubber tubing, etc.
), the resistance can be moved in a manner more suited to the sports skill’s intramuscular pattern.
With free weights, the athlete must guide and control the movement throughout the execution.
In the process, balance and stability are developed because the entire body participates in every exercise, especially when relatively heavy weights are used.
When the "marshmallow" machine weights are used, one must do what the machine dictates.
The athlete is guided by the machine, rather than by what the body or limbs are intended to do.
The machine isolates specific muscles and helps make them stronger, but that muscle hypertrophy will not necessarily be practical for any particular sport.
Therefore, machine exercises are useful for general conditioning purposes, not specificity.
Medicine balls are used in many different exercises to develop muscular strength and endurance, total body power, and flexibility, but their greatest value lies in explosive midsection and arm training.
The sudden forces experienced upon catching a weighted ball also imitate what occurs during play in football when contact is made with another player.
Rubber tubing (as opposed to dumbbells, barbells, or exercise machines) allows the athlete to duplicate movement patterns seen in the execution of football skills.
With rubber tubing, the athlete can create resistance in any and all directions so that replication of the sports skill movement pattern is possible.
The rubber tubing must have specific tensions and accessories so it can be attached to different parts of the body, as well as to different objects on the field, in the gym or at home. 
Luger may mean:  Luger pistol, a semi-automatic handgun  Georg Luger (1849-1923), Austrian inventor of the pistol  Arnold Luger, Italian luger who competed during the 1980s  Dan Luger (born 1975), English rugby union player  Karolin Luger, Austrian-American biochemist and biophysicist  Lex Luger, ring name of American professional wrestler and former football player Lawrence Pfohl (born 1958)  Lex Luger (record producer), professional name of American hip hop record producer Lexus Arnel Lewis (born 1991)  A participant in the sport of luge  Operation Luger, a joint military operation between the Canadian Forces and Afghan National Army in July 2007  "Luger" (film), a 1982 Dutch film written and directed by Theo van Gogh  
Return to WCW.
Alliance to End Hulkamania (1995–1996).
In late August 1995, after expressing to Sting that he wanted to leave the WWF, Luger got a call from World Championship Wrestling Vice-President Eric Bischoff to set up a meeting about a contract and Luger possibly "jumping ship".
Bischoff was initially reluctant to make the offer, as he didn't care for Luger personally or professionally, but relented due to both Sting's urging, and the idea that his appearance would make a big splash.
Bischoff, in fact, offered Luger only 20% of what he was making when he left WCW three years earlier in a deliberate attempt to have him turn down the offer (and, according to Bischoff, "at least tell Sting that I tried.
"), only to be surprised to see that Luger accept the offer.
Eight days after his appearance at SummerSlam and only one night after competing at a WWF house show in Halifax, Nova Scotia, Luger made his return to WCW on the premiere of "Nitro", coming out during the main event for the WCW World Heavyweight Championship between Hulk Hogan, who was the champion at the time, and Big Bubba Rogers, who was the challenger.
After Luger's return, he acted as a sort of tweener character, not making his allegiances known, except for his long-time friendship with Sting.
He merely claimed that he wanted to stake his claim at Hulk Hogan's WCW World Heavyweight Title, facing him on the September 11, 1995 edition of "Nitro," which Hogan won by disqualification.
At Halloween Havoc, Luger officially turned heel, attacking Hogan after his match with The Giant and joining Kevin Sullivan's Dungeon of Doom stable.
Later in the pay-per-view, Luger had a match where he lost to Randy "Macho Man" Savage.
Luger and Savage had a rematch at World War 3, which Luger won.
Later that night, Luger participated in the first-ever three-ring, 60-man battle royal for the vacant World Title, which was won by Savage.
Despite being a heel, Luger retained his friendship with Sting.
At Starrcade, Luger participated in a WCW vs NJPW World Cup of Wrestling where he represented WCW in a winning effort against NJPW representative Masa Chono.
Later that night, he participated in a triangle match with Sting and Ric Flair; Flair won after both Sting and Luger were counted out, making Flair No.1 contender to the WCW title.
The two men teamed up to defeat Harlem Heat for their first World Tag Team Championship on the January 22, 1996 edition of "Nitro", with Luger constantly threatening dissent due to his allegiance to the Dungeon of Doom, but always seeming to stay on the same path as his friend.
Luger also defeated Johnny B. Badd for the WCW World Television Championship on February 17, losing it back to him the next night.
He regained the television title from Badd by beating him on March 6.
The Dungeon of Doom aligned with the Four Horsemen to form the Alliance to End Hulkamania, which feuded with Hulk Hogan and Randy Savage.
At Uncensored, nine members from the Alliance participated in a "Tower of Doom Steel Cage match", but were unsuccessful in defeating the team of Hogan and Savage.
Luger was blamed for the loss because he accidentally punched teammate Ric Flair and was kicked out of the stable, thus turning him face again. 
Because obstacle racing involves a balance of speed, strength, and endurance, training for events can vary greatly from traditional approaches to fitness.
While running is the main component of an obstacle race, runners need to have a balance of endurance and total-body strength.
Functional, total-body exercises (rather than isometric, concentration exercises) are recommended to enhance strength.
The "burpee" is a favorite exercise among obstacle racers because it engages the lower body, core, and upper body all in one fluid movement.
With events ranging from 30 minutes to 5 hours, athletes must be accustomed to maintaining an increased heart rate.