10+ years of proven experience
Hundreds of clients, thousands of sessions. Whatever your body type or goal — we've been there, and we have the results to prove it.
About Against Gravity
A private coaching studio in Thornhill where personalised programs, experienced trainers, and full client focus come first.
The private studio advantage
We don't just teach you how to lift. With over 10 years of real-world experience, we design a fully personalised program built around your body, your lifestyle, and your goals.
From teenagers to seniors in their 60s — regardless of age, fitness level, or experience, we deliver the right results for the right person, every single time.
Teens · Strength & Development
20s-30s · Body Profile & Fat Loss
40s-50s · Body Composition & Health
60s+ · Rehabilitation & Senior Fitness
"A 20-year-old and a 50-year-old need to be coached completely differently. We know the difference — because over 10 years in the field taught us exactly that."
— Guy Jeong, Head Coach & Founder
Why Against Gravity
Premium tools, measurable progress, and undivided coaching attention on the floor.
Fully custom programs
No copy-paste plans. We assess your body, lifestyle, and goals from day one and build your program from scratch — designed for you alone.
Every age. Every level.
Teens to 60s and beyond. We adapt intensity, methodology, and movement selection to suit your age and physical condition safely.
No crowds. Just you.
Private studio means zero waiting, zero distractions, and 100% of our attention on you — every single session, no exceptions.
Premium location & equipment
55 Doncaster Ave, Thornhill — easy to reach before or after work. Professional-grade equipment from top brands, all in a private setting.
Competitive pricing
Elite 1-on-1 coaching at rates that rival any commercial gym. More personal attention and real results — for less than you'd expect.
Coaches
Experienced coaches focused on personalized programs, form, and long-term results.
Head Coach & Founder
Guy Jeong
I wasn't always this person. Growing up, I was skinny, lacking confidence, and just an ordinary guy with no particular direction. But fitness changed everything — not just my body, but my mindset, my self-worth, and ultimately my happiness.
From Martial Arts, to serving as a Squad Leader in the Republic of Korea Marine Corps, to competing on the Classic Physique stage — every chapter has been built on the same foundation: discipline, resilience, and the relentless pursuit of better.
That transformation is why I do this. I know what it feels like to start from nothing. Because I've lived it myself, I know how to guide you — without wasting your time, without making it harder than it needs to be. If I could do it, so can you.
Photo coming soon
Lead Trainer
Kory Hong
Everyone walks in with a different life — a different schedule, a different body, a different story. My job isn't to hand you a program. It's to understand your life first, then build something that actually fits into it.
As a former Squad Leader in the Republic of Korea Marine Corps and competitive Classic Physique athlete, Kory brings military-grade discipline and stage-level expertise to every coaching relationship. Real change comes from experience — and from genuinely caring about the person in front of you.
Tour the gym
Walk through the training floor, equipment layout, and coaching areas before your first visit.
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