Dumbbell seated one leg calf raise - palm up

Sit on a bench or chair with your back straight and your feet flat on the ground. Hold a dumbbell in one hand and place it on top of your thigh, palm facing up. Lift one leg off the ground and extend it in front of you, keeping your knee slightly bent. Raise your heel as high as possible by pushing through the ball of your foot. Pause for a moment at the top, then slowly lower your heel back down. Repeat for the desired number of repetitions, then switch legs and repeat.