She wakes at 5.30am every day and trains for 30 hours a week.
But fitness is not new for the youngster who began gymnastics at the age of 4.
Her Instagram feed is filled with motivational quotes, home workouts and snaps of her impressive gymnastic moves.
However, followers can't help but notice her ripped rig.
"So strong! Incredible," one follower wrote on a photo with Lyza's six-pack on display.
"You're so strong Lyza! I want your abs," said another.
"You look amazing girl, so fit and healthy," a third commented.
Her mother Jill Mosier, 45, said her daughter was completely self-motivated as she wanted to become the "best of the best".
"She stays on top of her game by getting up at 5.30am to train. We have set up all sorts of gymnastics stations in our storage room where she would go for hours to workout."
Lyza developed a passion for training when she began attending her mother's fitness classes last year.
"She drastically improved in such a short amount of time," Mosier said, adding her daughter loves to inspire others.
"She loves hearing that she inspires others. However, we also get the occasional mean person as well who says we shouldn't make her train so much."
Some people have referred to Lyza's training as "excessive", but Mosier assured she had nothing to do with Lyza's fitness regimen.
"I have four kids and Lyza begs to work out," she said.
"I am so proud of her and I can't wait for her to achieve her dreams and become an elite gymnast."
