Personal TrainerFitness CenterWeight Training Center
FastFit offers personal training in Seattle, WA, using proprietary isokinetic exercise technology to deliver safe, efficient strength training in just 20 minutes, twice per week.
Our certified trainers lead private, one-on-one and small group sessions designed to help you build muscle, lose fat, and improve energy with measurable results.
Located on 34th Ave, our clean, private studio also offers self-guided training options, providing a flexible and personalized fitness experience for busy adults, backed by our 90-day strength guarantee.
I am not a patient person and find working out a hassle. However, I know it’s important for long term strength, balance, bone density, etc.
This is perfect for me! I feel stronger after about a month and it is so easy to show up, work the program, and move on to the rest of my day.
LC
Late Coat
3 days ago
5.0
Love. Im 70 and it makes me feel strong. I love its efficient 20 minute workout. All the staff are friendly knowledgeable and helpful.
TP
Tamara Philip
Jun 19, 2026
5.0
5 weeks in and I'm already seeing some great results. If you are looking for Fast and Efficient then you should check this out. Coaching is excellent.
Yes. FastFit uses isokinetic resistance training to make every rep count, so your muscles are fully challenged in a short amount of time. That’s why just two 20-minute sessions per week provide the right balance of stimulus and recovery to drive real, sustainable results.
How is FastFit different from traditional weightlifting or gym workouts?
Traditional workouts rely on selecting weights, which can lead to undertraining or increased risk of injury. FastFit uses isokinetic resistance training, where the machine controls the speed of movement—so your muscles stay fully engaged from start to finish. This creates a more efficient, effective workout in less time.
Is FastFit safe for beginners?
Absolutely. FastFit is designed to be safe and approachable for all fitness levels. Our isokinetic machines provide smooth, controlled movement, and our certified coaches guide your form every step of the way—helping reduce injury risk while building confidence.
What kind of results can I expect with FastFit?
Results vary, but FastFit helps members build strength, lose fat, and improve overall health. Because workouts are designed to be highly efficient, members often see meaningful progress in less time. In a recent study, participants lost 2.5x more fat, gained 2x more lean muscle, and improved cardiovascular performance 3.5x more than traditional weightlifting over 12 weeks. Many also notice increased energy and strength within just a few weeks.
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