A very basic move for high/low impact aerobics is the march and the job. They're essentially the same move, but one is low impact or no impact and the other is a little bit of a hop, so the intensity level comes up. So with a march you start with your feet together, and march for eight, seven, six. You want to make sure that you are standing tall. Don't slump your shoulders. Bring your knees up to about a 45 degree angle. If you want to make it harder, bring your knees higher, eight, seven, six. Back up, five, four, three, two, and one. Now we are going to go into the high impact version, it's just a jog. Jogging in place. If you want to make this harder you can bring your knees up height. It makes it a lot harder. Your heart rates going to go up or back down for eight, seven, six, five, four, three, two, one. Back up here for eight, seven, six, five, four, three, two and one. Marching here for four, three, two and then jog for four, three, two and one. That's the march and jog.