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

Sunil Portrait

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.

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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

Client transformation 2
Confidence & Strength Gained
Client transformation 3
Healthier, Leaner, Stronger
Client transformation 4
Sustainable Fat Loss
Client transformation 5
Building Muscle Safely
Client transformation 6
Endurance & Stamina Boost

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 Assessment

Location

Brampton, Ontario

Phone

+1 (647) 865-0849

Email

s3thifit@gmail.com

Instagram

@s3thifit

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.