Lie down on your back and plant your feet on the floor, shoulder-width apart, around two feet away from your bum.
Holding a dumbbell or kettlebell, extend your arms straight above you so your elbows are facing in and the weight is parallel with your chest.
Squeeze your glutes and push through your feet to lift your bum in the air, so your body is in one parallel line.
Extend your arms back behind your head until the weight is a couple of inches from the floor.
Bring the weight back forward and repeat.
To come out of the movement, sit your bum back on the floor and bring the weight down to your chest and place it to one side.

Move of the week: this full-body movement targets your core and your glutes