Small-group, coached training in Grand Rapids. Build real strength, real conditioning, and a body that works — one session at a time.
Claim Your Free 3-Day PassTrack your nutrition daily. Show up to your three 45-minute coached sessions each week. Complete your weekly check-in. If you haven't dropped 20 lbs in 90 days, we'll keep coaching you — completely free — until you do. That's how confident we are in the system.
You may have tried other gyms. You may have had success before and lost it. You may be starting completely from scratch. What every Portion Fitness member has in common is one decision — this time, you're doing it for real.
You don't need a more intense workout. You need a coached program that fits your life and meets your body where it's at.
Yes, this is me. Let's go.
Claim My Free 3-Day Pass
Every session blends functional movement, resistance training, and conditioning into one coached hour. Dumbbells, kettlebells, sleds, rowers, and your own bodyweight — programmed to build strength you can actually use, not just a sweat you forget by tomorrow.
This is a two-coach operation with a family-sized feel. Tim and Nate know your name, your goals, and probably your last injury too. You'll be corrected, encouraged, and held accountable by coaches who train right alongside you — no egos, just progress.
Our Grand Rapids studio is clean, dialed-in, and built for training — not for posing. Real equipment, matte black floors, zero attitude. Show up, put in the work, and feel the difference by the time you walk out.
Miss one and the system breaks. Stack all three and the transformation becomes inevitable.
Resistance + Conditioning
Coached resistance and functional training built to build real strength — scaled to wherever you're starting from.
A plan you'll actually keep
A simple, personalized plan to fuel your goals. No fad diets — just real food, real results, and a lifestyle you'll actually stick to.
The glue that holds it together
We're with you every step. Our coaches and community keep you motivated, supported, and on track — like family.
Coached Group Strength Training
Small-group, coached resistance and conditioning sessions built to fit any schedule and any starting point. 45 minutes, in and out, real work every time.
Group Strength Training + Nutrition
Everything in Complete, plus a personalized nutrition plan built around your goals — so the work you put in at the gym actually shows up everywhere else.
1:1 Personal Training + Nutrition
Fully personalized coaching, one-on-one, paired with dialed-in nutrition guidance. Our most hands-on program — built entirely around you.
Get StartedOur 90-Day Guarantee — lose 20 lbs in 90 days, or we train you free until you do — is included with the Premium and Elite programs.
Three full sessions on us. See exactly how we train, meet your coaches, and decide for yourself — zero pressure.
Get My Free 3-Day PassFind us on Northland Dr NE — easy to get to, easy to park, and built to make showing up the easiest part of your day.
-7 lbs in 7 weeks
-16 lbs in 7 weeks
"Can't say enough good things about this new fitness company! It's a small operation right now with only two coaches, but they pack a massive punch. I love how they tailor everything to your specific goals and experience level, and the fact that they jump in and do the workouts with you is a huge plus. Go see Tim and Nate — you won't regret it!"
"Nate and Tim have done an excellent job at helping me form fitness habits that have helped me lose weight and gain muscle overall. They understand that some of us older people have injuries and they work with us on these. I'm impressed at how friendly, accommodating, and flexible they have been with me and my weekly injuries haha! Portion Fitness is an inclusive, challenging, and growing gym that I've come to enjoy my fitness time, which has never been the case. If you haven't joined yet, please come out and check out their gym — Tim and Nate make it fun to get your fitness on!"
Fill out the quick form and our team will reach out within 24 hours to get your 3 days booked.
Come in and get coached through your first full session by Tim or Nate — no pressure, no judgment.
Pick the program that fits your goals and start showing up. Real coaching, real community, real results.
Step 1 is a free 3-day pass.
Take Step 1Fill out the form and our team will reach out within 24 hours to get your 3 days scheduled.
Results take time, but consistency gets you there. If you're a beginner, you can start to notice a difference in your strength and conditioning in as little as 30 days.
Anything you can move comfortably in — leggings, shorts, or sweatpants with a tank or tee — plus supportive sneakers you're comfortable lifting and moving in.
We recommend starting with 3 classes a week, working up to 4–5 a week after your first couple of months.
We start with a short warm-up, move into a resistance training block focused on form and strength, push through a conditioning finisher, then end with a cool-down and stretch. Start to finish, sessions run 45–60 minutes.
We don't offer single drop-ins, but we do have class packs and membership options so you can train as often as fits your schedule.
