Fitness & The Right Tools


The rulers to track our fitness is broken. The most popular tools to quantify your fitness today are scales and pedometers. They’ve been around for over a century and haven’t seen valuable innovation.

Professional athletes and trainers today have access to linear position sensors like the Tendo Unit to track bar speed, power, and force. These systems give you highly accurate reporting on the athlete but are expensive and require training to use effectively.

We believe in distilling decades of fitness intelligence for everybody. And through research at the Atlas Sweat Lab, we’ve built a velocity-meter into the Atlas Wristband and our free app. Beta.

The Science. Atlas Sweat Lab.
Muscle fiber types can be broken down into two major types: thin and efficient slow twitch (Type I) muscle fibers for endurance and thick and powerful fast twitch (Type II) muscle fibers for strength.

Velocity is inherently linked to force. Physiologically speaking, when force increases, velocity decreases. i.e. With other variables held equal, lighter objects can be moved faster than heavy objects.

Type I muscles are characterized by relatively low-velocity muscle contractions. Marathon runners typically have body’s and build with high type I muscle fiber composition as a result of their training regimen. In contrast, short distance sprinters typically have muscle compositions that skew towards a higher percentage of type II muscle fibers.

This field continues to evolve but today research suggests that “High-velocity isokinetic contractions, ballistic movements such as bench press throws and sprints… may increase type II fibers”

The Atlas Velocity-Meter is designed to help filter and digest the raw data to give you a workout-to-workout and set-to-set metric designed to give you truly actionable feedback in order to keep you focused on the right gains.

For example, if your goal is to burn fat. You’ll want to focus your time and hard work on the light gray 0.1 – 0.35 m/s range. Looking at this velocity-meter you instantly know you’re in the right speed range.

More examples? If you see that you’re in the yellow zone, you need to slow them down.

If your goal is to increase raw strength? Strong Lifts 5x5 Split-Training may be the program for you.

There are many pros to 5x5 split-training. Perhaps the most compelling: 5x5 training is easy to follow. 5 sets. 5 reps. Failure to achieve 5x5 in three consecutive workouts calls for a “dead load”, which means you decrease the weight.

Experts have been regulating training tactics by leveraging how the body responds to training at different velocities. We’ve generalized the force-velocity curve to be directly valuable to your goals: Build Strength, Transform, and Burn Fat.

Yours in Health,
Peter Li