4. Step up

• Stand tall with feet shoulder-distance apart in front of a step.
• Tighten your core and place your left foot flat on the step while keeping your spine straight.
• Shift your weight onto the left foot.
• Breathe out, and press through the left heel and move your body up onto the step.
• Place the right foot entirely on the step. Breathe in, and then slowly lower your left foot to the floor.
• Return the right foot to the floor to return to your standing position.
• Continue leading with the left leg until you've completed your goal number of repetitions, then repeat on the opposite side.

Want a bigger challenge? Hold a dumbbell or weighted object in the opposite hand of the stepping leg.