PEMF mats use pulsed electromagnetic fields to stimulate cellular activity, support circulation, and promote natural recovery processes. Key factors include frequency range (measured in Hz), waveform consistency, intensity levels (Gauss rating), and coil distribution across the mat. Lower frequencies are often linked to relaxation and recovery support, while higher frequencies may provide stimulation effects. Understanding these specifications helps distinguish high-performance devices from heavily marketed but underpowered models. For a complete breakdown and my top recommendations, check out my detailed guide on the best PEMF mats.