DB Goblet Lateral lunges

Grab a dumbbell and hold it on front of your chest.
Assume a standing position with your feet wider than shoulder-width apart, or the so called sumo stance.

From this position, transfer most of your bodyweight on 1 foot, bend at the hips and lower with this leg until possible for you. Keep your core tight and your back straight.

When you reach the bottom position, get back up into your starting position and perform with the opposite leg.
Performing the squats with both legs counts as 1 repetition.