GMX7 began with an insight earned through years of competing at the highest levels of swimming.

As a World Record Holder and four-time World Champion, GMX7 Founder David McCagg understood firsthand that swimming harder doesn't necessarily mean swimming faster. Real speed comes from the ability to generate power and translate that power into smooth, efficient propulsion.

Yet traditional swim training often separated strength from the place athletes needed it most: the water.

Swimmers logged thousands of yards. Strength was developed in the gym. But David saw an opportunity to bring the two together to help athletes build swimming-specific power while reinforcing the control, efficiency, and feel for the water that high-level performance demands.

That insight became GMX7.

Developed from competitive experience and built around the principles David relied on at the highest level of the sport, GMX7 gives athletes a way to train power, propulsion and control with every resisted stroke.

Because the goal isn't simply to work harder.

It's to become a stronger, more efficient swimmer.