If we really want to get the dream of implantable electronics off the ground, we’ll need to figure out how to make circuit boards flexible enough to morph and move with our bodies. Thankfully, a ...

Circuit training refers to a series of between four and ten exercises, repeated back-to-back for a set period of time. Some circuits will include breaks between exercises, some won't.

Plus, did you know you can mix up your circuits depending on your goals? Whether you're trying to lose body fat or build muscle, there's a smart way to train. Scroll on to find out exactly how.

Their circuits are built from two laser beams, one that creates a horizontal sheet of light to act as a circuit board, and another vertical laser that traces out the path of the circuit.