People exercising in a gym, including a man doing battle ropes, a woman on an exercise bike, and a man on an elliptical trainer. The gym has wood flooring, large windows, and weight plates stacked on a rack.

Semi-Private Personal Training in Marshfield, MA

This isn't a group fitness class. It's personal training in a small group of up to six — your own program, your own pace, with a dedicated coach who knows your name, your history, and exactly what you did last week. You get the accountability and energy of training alongside others, without ever becoming a face in the crowd. Because real change takes 30 years, not 30 days.

Real Coaching. Small Groups. Your Own Program.

Why Choose Semi-Private Training?

Personal Training, Without the Private Price Tag

Most people don't need someone watching their every rep — they need a real program, a coach who adjusts it, and people around them who keep them showing up. Semi-private gives you all three. You train your plan, the person next to you trains theirs, and one coach guides all of it. It's the sweet spot between going it alone and full 1-on-1.

  • Your own program, built around your goals — not a one-size-fits-all class routine

  • A dedicated coach who knows you and adjusts as you progress

  • The accountability and energy of a small crew that notices when you're not there

  • Premium coaching at a more accessible price than private 1-on-1

Multiple clients training Semi-private personal training at the same time with different workouts

A Community That Supports Your Success

When you train with us, you’re not just joining a fitness program—you’re becoming part of a community. Our semi-private clients push each other to succeed while celebrating progress every step of the way. You’ll never feel alone in your journey.

Measured, Not Guessed

Every semi-private client gets a weekly InBody 570 scan — full body composition, not scale weight. Muscle gained, fat lost, visceral fat, metabolic rate. Your coach uses that data to adjust your individual program inside the session. No other training facility on the South Shore tracks small-group clients this closely. You'll see exactly what's working, week over week.

Built for Every Body in the Room

Worried you won't keep up? Don't be. We can run a 25-year-old athlete and an 85-year-old retiree in the same session — each training at exactly the right level. Every coach knows how to scale and modify your program, so you're never in over your head and never held back. You train next to others, but you never train their workout.

What’s Included in Your Semi-Private Training?

Expert Coaching

Semi-private personal training under coach supervision in south shore

Even in a the small group setting, you’ll get the personal attention you need. Our trainers will ensure your form is correct and your workouts are optimized for your goals.

Functional Fitness Workouts

Brant rock client losing weight pushing sled at the genesis fit in south shore

During your sessions you will use dumbbells, kettlebells, TRX straps, slam balls, and more to help you build strength, improve mobility, and burn fat. Every workout is tailored to help you move your body through space and function better in everyday life.

Flexible Scheduling

Workout planner with fitness schedule to show group class times at the genesis fit near duxbury ma

Make it easy to fit fitness into your life. Sessions are offered:

  • Monday - Friday: 4:30-10am, 5-7pm

  • Saturday: 7-10 AM

State-of-the-Art Facility

Seniors doing semi-private personal training in marshfield ma

Train with top-tier Rogue equipment, TRX straps, water rowers, kettlebells, and more. You’ll have everything you need for a challenging and rewarding workout.

The Results You Can Expect

Transform Your Mind, Body, and Life

Semi-private training delivers powerful results, including:

  • An average loss of 13 lbs of fat in 6 weeks.

  • Better-fitting clothes within 3 weeks.

  • Increased energy and improved mobility after just 2-3 weeks.

  • The strength and confidence to tackle your everyday life.

*Average client results at The Genesis Fit, measured by InBody 570 body composition scans.

Real Client Success Stories

Why The Genesis Fit Stands Out

The Community

Semi-Private Personal Training

In our semi-private sessions, you'll find people from every walk of life — each following their own program, coached at their own level, in the same supportive room.

Different goals, different starting points, same room — and the same expert coaching for every person in it.

You’ll train alongside:

Choosing the right fit

Private or Semi-Private

Both give you expert coaching, weekly InBody 570 scans, and a personalized nutrition system. The difference comes down to how you want to train.

Just you and your coach, with every session built entirely around you. The highest level of individual attention we offer — ideal if you're working around a specific injury or condition, want maximum scheduling flexibility, or simply prefer your coach's full focus for the entire hour.


Best if you want: completely individualized attention, total privacy, and the most personalized pace.

You follow your own program with a dedicated coach — you're just doing it alongside a handful of others doing the same. Real, hands-on coaching with the accountability and energy of a room where you're known by name. Our most popular option, and great value.


Best if you want: expert coaching, built-in accountability, and community.

Not sure which is right? That's exactly what your free consult is for. We'll talk through your goals, your schedule, and where you're starting from — and help you choose. No pressure either way.

Book Your Free Semi-Private Session Today!

Experience the energy, motivation, and results of a semi-private setting. Schedule your first session for free and see why The Genesis Fit is the best choice for semi-private fitness in Marshfield.

Frequently Asked Questions

Don’t Wait to Start Your Fitness Journey

Click below to book your free semi-private training session today. Join our community and take the first step toward achieving your fitness goals together.