Can you build muscle with F45?Yes. Here's the honest version.
You build muscle by loading it more over time and recovering. F45 strength days do exactly that with dumbbells, kettlebells, sleds and functional racks, at weights a coach sets and raises as you get stronger. For most people that's plenty. For someone chasing a heavy barbell total, F45 is the conditioning and the accessory work, not the whole program. Your first class is free, so test the strength day yourself.
Try a strength day — free
Pick your class time right after — no call needed. No payment, no commitment.
What a strength day looks like
You walk in and the workout is already on the screens. After a coached warm-up you rotate through timed stations: goblet squats, dumbbell presses, kettlebell swings, sled pushes, rows, lunges, carries. A demo screen at each station shows the move; the coach tells you which dumbbell to pick up. Work for the interval, rest, rotate. Done at 45 minutes.
The thing that makes it build muscle rather than just tire you out is the coaching. Two coaches on the floor correct form and push the weight up when you’re ready. That’s progressive overload, done for you, which is the part most people skip when they train alone.
Who this is enough for, and who should add more
If your goal is to look stronger, feel stronger, carry groceries and kids without thinking about it, and stay that way into your 50s and 60s, three or four coached sessions a week that hit the strength and hybrid days will get you there. That’s most people, and it’s who the format is built for.
If your goal is a 400-pound deadlift or a competitive lifting total, F45 isn’t the whole answer, and we’d rather say so. There are no technical barbell lifts here. Plenty of members who lift heavy elsewhere use F45 as their conditioning and their accessory work, three days a week, and the HYROX Saturdays for the engine. Read F45 vs CrossFit for the full comparison.
Muscle is built in the kitchen and in bed as much as on the floor. Protein and sleep are the difference between a strength day that builds and one that just hurts.
Tracking it
The bathroom scale can’t tell muscle from fat. The InBody scanner at the studio can: it reads muscle mass and body fat separately, so you can see muscle go up while fat comes down, which is what the first few months usually look like. Members get two free scans a year.
Want a class-by-class picture first? What is F45 walks through the format. Comparing it to hiring someone? F45 vs a personal trainer is the honest answer. Ready to try it: pick a strength day on the schedule and book below.
Strength and muscle questions
Can you build muscle with F45?
Yes. Strength days load you with dumbbells, kettlebells, sleds and functional racks at weights a coach sets and raises over time, which is the mechanism muscle growth needs. For most people who want to look and feel stronger, three or four coached strength and hybrid days a week does it. For someone chasing a heavy barbell total, F45 is the conditioning, not the whole program.
Is F45 strength training or cardio?
Each day is programmed as one or the other, or a hybrid. Strength days are resistance work across timed stations; cardio days use rowers, bikes, ski ergs and bodyweight; hybrid days mix them. If muscle is the goal, show up on the strength and hybrid days and use the cardio days as recovery work.
Are there barbells at F45?
No technical barbell lifts. F45 uses dumbbells, kettlebells, sleds, bands and functional racks. You can build real strength and muscle without a barbell; what you won't do here is a heavy back squat or a snatch. If those are the point for you, read the F45 vs CrossFit comparison.
How does the coach know what weight I should use?
They watch you. Two coaches walk the floor every class, set your starting weights, and tell you when to go up. Progressive overload happens because a coach is standing there suggesting the next dumbbell, not because you're guessing on your own.
How many days a week to build muscle?
Three or four sessions a week that include the strength and hybrid days, plus enough protein and sleep to recover. Timed stations keep each session to 45 minutes, so four a week is realistic for someone with a job.
Will I bulk up?
Not by accident. Muscle takes months of consistent loading and eating to build; what most people notice in the first two months is looking more defined and moving better, because they've added some muscle and dropped some body fat. The InBody scanner at the studio shows both numbers separately.
Your first class is free
Come see it for yourself. Book below or call, and a coach will text you to lock in a time.