Start on all fours. Extend your right arm in front of you and your left leg behind, actively reaching in opposite directions. Keep your hips and shoulders square to the floor, and avoid letting your ...

We’ve all been there: holding at the bottom of a squat or plank, feeling your legs start to quiver like crazy. Congrats—you’ve experienced the burn of an isometric hold. These strength-boosting pauses ...

The low-impact, low-fatigue nature of these exercises also allows them to easily be layered into a training week without compromising key runs due to soreness or extreme fatigue. Over time, these ...