Nagging lower-back twinges, post-workout calf cramps, and that stubborn neck stiffness from too many hours at the laptop can ruin the best of days. The MegaWise AS1080 dual-channel EMS/TENS unit targets those everyday aches with 48 finely-tuned massage and stimulation programs, letting weekend warriors, desk jockeys, and chronic-pain sufferers dial in relief in seconds. Its…