Hydrostatic underwater weighing — the most accurate body composition test available — brought directly to your gym. Get your true body fat %, lean mass, and body density in under 30 minutes.
A specialized truck visits your gym. The process is simple, fast, and comfortable.
Find an upcoming event at a gym near you, pick your time slot, and confirm your booking in under two minutes.
Our fully equipped testing truck arrives at the partner gym. No clinic visit, no travel — we bring the lab to your workout.
A trained technician guides you through two to three short submersions in our heated tank. The test takes under 20 minutes.
Receive your detailed body composition report immediately. Track changes over time in your personal dashboard.
Every metric you need to make informed training and nutrition decisions.
Hydrostatic weighing has been the reference method in body composition science for 70 years. We made it accessible.
Hydrostatic weighing is the gold standard used in clinical research and sports science. Accuracy to within ±0.5% body fat — significantly better than bioelectrical impedance or skin calipers.
Our truck-based lab visits partner gyms on a rotating schedule. No need to find a university lab or special clinic. Book the next event at your gym and show up for your workout.
Your results live in a personal dashboard. Retest every 6–12 weeks to objectively measure body recomposition, not just weight change.
The full session takes less than 20 minutes. Arrive, get tested, receive your report, and get on with your day. We work around your schedule, not the other way around.
Receive a detailed PDF report covering body fat %, lean mass, fat mass, body density, and population-referenced context to understand where you stand.
Gym operators earn a revenue share per booking at their location. Drive member engagement and add a premium service to your facility with zero overhead investment.
"I thought I was around 22% body fat based on my scale. The hydrostatic test put me at 17.8%. The difference completely changed how I approached my training program."
"Finally a real number. My trainer and I have been guessing for two years. Knowing my actual lean mass made our programming so much more precise. Retesting every quarter now."
"The process was quick and the technician was professional. Got my full report on my phone before I left the parking lot. Excellent experience — worth every dollar."