When people think of Hollywood fitness they usually picture crash diets and a six-week transformation for a role. Sydney Sweeney breaks that stereotype. Best known for Euphoria and The White Lotus, her athletic physique is built on something far more durable: a genuine martial arts background that started long before she was famous, plus years of consistent, varied training. Based on what she has shared in interviews, here is what the Sydney Sweeney workout involves, why it works, and what gym-goers in Nunawading can borrow from it.
A real martial arts background, not a movie prep
Unlike many actors who train combat sports only for a role, Sweeney has spoken publicly about growing up in mixed martial arts. She has said she began MMA training around the age of 12, competed in grappling as a teenager, and was often the only girl in her gym, beating male competitors along the way. MMA draws on Brazilian jiu-jitsu, Muay Thai, wrestling and boxing, so that background built strength, conditioning, coordination and, above all, the mental toughness that comes from hard sparring rounds.
This is the kind of foundation we see in members who started martial arts young: the fitness is a by-product of learning a skill, which is exactly why it lasts. Read more in why Muay Thai is for everyone.
Why martial arts builds a better body
At Hammer’s Gym we talk constantly about training with purpose, and this is a perfect example. Martial arts training burns a high number of calories, builds functional strength rather than just mirror muscles, sharpens reflexes and agility, and develops discipline and confidence. It is not simply a workout; it is a skill you keep improving for life.
The Sydney Sweeney workout: what her training reportedly includes
1. Boxing and combat training
Boxing remains a staple, particularly when preparing for physical roles. Pad work, bag rounds and conditioning circuits build endurance, upper-body strength and the coordination that makes movement look effortless on screen. Our boxing and Muay Thai classes follow the same structure.
2. HIIT and functional training
She has been reported to include high-intensity, athletic work such as tyre flips, burpees and medicine ball throws. This style of training drives fat loss, builds explosive power and improves athletic performance far more than steady cardio alone. Our 500 calorie hybrid workout is built on the same principles.
3. Pilates and yoga
To balance the intensity, Pilates for core strength and posture and yoga for mobility and recovery are part of the mix. It is the same reason we added Reformer Pilates to our timetable: hard training needs a counterbalance.
4. Everyday movement
Daily walks and time outdoors round it out. Consistency beats perfection, and the low-intensity movement between hard sessions is part of why she recovers well enough to keep training.
The real secret: mental toughness
The most useful takeaway is not any single exercise. A martial arts upbringing teaches discipline, resilience and calm under pressure, and those qualities are what allow someone to balance filming, travel and training without falling off. The gym floor and the mat teach the same lesson to everyone who sticks with them.
How to apply the Sydney Sweeney approach at Hammer’s Gym
- Train with purpose. Do not just lift; build skills through boxing, Muay Thai or BJJ alongside your strength work.
- Mix your training. Combine strength, conditioning and functional work across the week. Our balanced gym program guide shows how.
- Stay consistent. She did not get fit in six weeks; she has trained since she was a child. Give yourself months, not days. See what happens after 30 days of regular training.
- Build mental strength. The hard sessions are where results and resilience are made.
Final word
Sydney Sweeney’s fitness is a case study in doing the unglamorous things for a long time: learning a martial art, training with variety, recovering properly and turning up. If you want to train like an athlete rather than just look like one, start adding combat-style training and functional work to your week and commit to it.
Hammer’s Gym in Nunawading has everything you need: Muay Thai, boxing and BJJ classes for all levels, a huge functional and strength floor, Reformer Pilates and yoga, and personal trainers who can tie it all together. Claim a free one-day trial and start your own long game. We are minutes from Mitcham, Blackburn, Box Hill and Doncaster. For more celebrity training breakdowns, read celebrities who train Muay Thai.