: Air resistance flywheels create a rhythmic "whoosh" sound. It's not silent, but many find it meditative rather than annoying.

Either way, the SkiErg is easy to assemble, and we provide all the tools you'll need to do the job. ... The SkiErg relies on high- Vulcan Strength

The core of the Concept2 appeal is its . Unlike motorized treadmills that "pull" you along, Concept2 devices use air resistance: you only get out exactly what you put in.

: Because the PM5 Performance Monitor is calibrated to account for air density, a 2:00/500m split on a machine in a damp basement in London is identical to one in a high-altitude training center in Colorado. This makes it the only equipment where your data is globally comparable. Why People "Buy Concept2" Over Competitors

: Once you pay the ~$990 for a RowErg, you own the experience. There are no mandatory monthly fees to access your data or basic features.

: These machines are built with steel and heavy-duty plastic to survive decades of use in commercial gyms and military bases.