If you're having trouble picturing the discipline of isometrics and how it's interpreted by the Tao handheld device, imagine ironing a patch to a jersey, operating a circular saw, applying pressure to a wound, and any number of pressure-based activities. The gadget, made by Tao-Wellness, mimics those movements using a device no larger than a smartphone (but slightly thicker), according to Venture Beat.

Used by the military, in schools, and even by individuals looking for a more angular face (you're going to have to research this further), Isometrics were invented as a convenient strength and exercise program. Their basic principle is to induce force within muscles without contraction, according to www.med-health.net. Besides the movements more specific to the Tao, other isometric exercises include leg extensions, wall pushoffs, and side stretches.

At $200-$300, the Tao also tracks movements, provides one's heart rate and calories burned, and even has "food-tracking capabilities," according to Venture Beat -- all readouts available via one's smartphone. Also included are a built-in "coach" for instructing users on various exercises and a voice-command system (to keep your e-coach in check).

An OLED screen provides a menu of options, not controlled via buttons (of which there are none), but "by gestures, by tilting and tapping, and through your phone," according to Venture Beat. That feature could be the tipping point of the device; if the "gestures" are intuitive, perhaps the mini-exerciser will catch on.

Based on reports from Venture Beat and med-health.net, isometrics aren't necessarily a substitute for exercise, but more of a way to sneak in a workout when one's busy or keep one active in situations where one normally wouldn't be able to, such as driving and at work.