When personal trainer Sarah Matthews invited her long-time client Jennifer Davis, 42, to participate in a new muscle activation study, neither expected to uncover a weakness that would transform Jennifer's training experience after years of frustration.
"I'd almost given up on certain exercises," admits Jennifer, who had been consistently training for over a decade. "No matter how strong my back and shoulders became, my grip would always give out first. I thought it was just something I had to live with."
The answer came in the form of blue patches on thermal scans—cold spots of inactive muscle tissue during what should have been full muscular recruitment.
The invisible weakness had finally been exposed.