Ready to Unlock Your Strongest Self?
Transform your body with personalized coaching & nutrition — sustainable results, accountability, and a bit of fun along the way.
Book your free assessment now!5+
Years Experience
120+
Happy Clients
2,500+
Training Hours

Hi, I’m Sunil Sethi
I’m a certified personal trainer. For over 5 years I’ve helped busy professionals transform their bodies & habits with sustainable, fun programs.
Get Your Free Assessment!My Specializations
Functional Fitness
Train to move better in daily life—mobility, balance, and core strength—so stairs, lifting, and play feel easier.
Private Training
One-on-one coaching tailored to your goals and schedule. We track progress, adjust weekly, and keep you accountable.
Endurance Training
Build cardiovascular capacity with smart intervals and steady efforts. Expect better stamina and quicker recovery.
Muscle Building
Evidence-based hypertrophy with progressive overload and precise form cues to add lean, strong muscle safely.
Strength Training
Get stronger with compound lifts using periodized plans. We focus on technique, joint health, and steady PRs.
Weight Loss
Lose weight sustainably with training, nutrition habits, sleep, and stress management—no crash diets.
Fat Loss
Reduce body-fat while protecting muscle via strength work, protein-forward nutrition, and metabolic conditioning.
Nutrition Guidance
Discover practical nutrition guidance to support your workouts and overall health. No extremes-just smart, sustainable choices for lasting results.
Services Offered
Online Sessions
Nutrition Guidance
1-on-1 Coaching
Personalized Plans
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Customer Reviews
Real feedback from clients who trained with S3THIFIT
Emma R.
“Sunil helped me lose 15 lbs in 8 weeks. The weekly check-ins and personalized plan were a game-changer!”
Michael T.
“The best trainer I’ve worked with. Form cues were on point and the program was actually fun to stick to.”
Priya S.
“Great experience! Nutrition guidance plus workouts made it easy to stay consistent and see results.”
Client Transformations





Frequently Asked Questions
What do I need to get started?
Just comfortable clothes and a water bottle—I provide the rest.
Can I train online without equipment?
Yes—bodyweight & band workouts fit any space or budget.
How do your nutrition plans work?
Custom meal guidance based on your goals, preferences & lifestyle.
What payment methods are accepted?
Credit card, Debit card, VISA, E-Transfer, Cash.
LET’S STAY IN TOUCH!
Follow me on Instagram for your free assessment & latest fitness tips.
Free AssessmentLocation
Brampton, Ontario
Phone
+1 (647) 865-0849
s3thifit@gmail.com
Working Hours
- Monday – 6 a.m.–9 p.m.
- Tuesday – 6 a.m.–9 p.m.
- Wednesday – 6 a.m.–9 p.m.
- Thursday – 6 a.m.–9 p.m.
- Friday – 6 a.m.–9 p.m.
- Saturday – 6–9 a.m.
- Sunday – 6–11 a.m., 6–9 p.m.