Step by step instructions
Grab a pair of dumbbells and stand with feet together, arms by sides. Take a wide step back with right foot and lower into a lunge, bending both knees about 90 degrees (aim to lower front thigh parallel to the floor).
Press halfway up (knees bent at about 45 degrees) then lower back down into a full lunge before pushing off right foot to return to starting position; repeat. Do all reps on the right, then repeat on the left to complete one set.