Jennifer Lopez stunned fans at the Hard Rock Stadium and home when she performed at the Super Bowl Halftime Show with Shakira. However, JLo's amazing physique at the time also sparked speculations.

Woman's Day published a headline this week that reads "J.Lo's Mystery Muscle." The tabloid alleged that the Hustlers actress might have given herself an extra help to bulk up before the halftime show. It cited a source who claimed that some people in Lopez's inner circle are wondering if she has taken steroids prior to the show.

"Jen's a big fan of protein shakes to help her tone, but the week leading up to the show, her biceps were especially huge," a supposed source tells the magazine.

Gossip Cop quickly debunked the rumor, citing an individual in JLo's camp, who just laughed off the false story. Gossip Cop noted though Woman's Day did not indicate directly, it could have come up with a ridiculous story because of Lopez's fiancé, Alex Rodriguez, previous involvement in a steroids scandal.

In 2014, the New York Yankees superstar admitted to illegal use of steroids during his professional MLB career. He got suspended for violating the league's anti-doping rules.

Gossip Cop also noted that the tabloid's story is hard to believe as Lopez has been known as one of the most health-conscious celebrities in town. In a previous interview with O Magazine, her personal trainer, Dodd Romero, revealed the singer/actress diet and workout routine.

Romero said the "On The Floor" singer exercises daily, and her routine consists of various workouts for her abs, arms, and lower body. JLo also maintains a healthy diet that consists of high protein and organic foods.

She stays away from processed foods, caffeine, and alcohol. Romero added there were also times when the singer cut out all sugar and carbs in her diet.

Lopez's dedication to keeping her body fit was also seen in Alex Rodriguez's behind-the-scenes YouTube clip of Super Bowl Half Show. The Second Act actress was seen in the clip still hitting the gym just hours before the Super Bowl show.

It also showed how JLo misses her sweets after months of perfecting her performance. Towards the end of the clip, Lopez stepped out of the stage, and after hugging her loved one and the production staff, she exclaimed that she wanted a doughnut.

"They said if I did good, I could have a doughnut," Lopez said after she got the sweet treat.