Are you standing, sitting, lying down or are your feet up the wall (love viparita korani)? It doesn't matter, this will work anyway.
Attend to balancing the sensations from foot to foot, within each foot, foot to foot. Inhale as you 'push' away the base of your big toes (that's at the 'ball' of the foot). Exhale as you press away the outer edges of each heel. Do 3 times.
Check in with your hips, check in with your knees, how do you feel?