It's been more than a year since the UFC's Holly Holm shocked the world with a decisive knock-out victory over the consensus top female fighter on the planet, Ronda Rousey.
But if Rousey's muscle-bound physique is any indication, she's ready to reclaim her UFC belt and her reputation as the most-feared female practitioner of mixed martial arts.
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Rousey made weight at the UFC's official weigh-in ahead of her Dec. 30 bout with current champion Amanda Nunes, and underscored her seriousness by showing up in arguably the best shape of her career.
“I don’t care about anything except for winning this fight and I’m not spending energy on anything else,” Rousey said, according to Sports Illustrated.
In MMA, the fighter with the most "shredded" physique doesn't always win, according to The Washington Post. MMA heavyweight legend Fedor Emelienanenko -- the chubby Russian universally considered the greatest heavyweight fighter of all time -- went undefeated over a period of almost 10 years while displaying incredible power and speed that didn't seem possible with his frame. But Rousey's condition "shows how seriously she has been taking her training for a return to the Octagon at UFC 207."
Rousey is a former Olympic medalist in judo and was a pioneer for women's MMA, becoming the first-ever female UFC champion shortly after the UFC created a women's division for the first time in the organization's more than two decades of history.
She soon became the organization's most marketable fighter, drawing fans with a combination of her magnetic personality and exceptional mixed martial arts skills -- Rousey compiled a 12-0 record through August of 2015, finishing nine opponents with her trademark armbar submission and three others by displaying her considerable knockout power.
But she was stopped cold on Nov. 15, 2015, when bantamweight challenger Holly Holm frustrated her with a blinding display of technically proficient boxing, never allowing Rousey to get close enough to end the fight with her grappling and jiu jitsu skills.
Since then, the women's belt has changed hands three times, and Nunes is the only woman standing between Rousey and the belt she seeks to regain.
Rousey and Nunes will headline UFC 207 on Dec. 30, which analysts say could be the organization's most-watched event of the year.
In addition to the Rousey-Nunes fight, UFC 207's fight card features a men's title bout between bantamweight champion Dominick Cruz and challenger Cody Garbrandt, as well as eight additional fights spread out over the pay per view event and a handful of free undercard fights airing on Fox Sports 1, according to Sports Illustrated.