20 jumping jacks (targets cardio and also the lower body)

20 bird dogs (targets entire core)

Do this set ten times for a total of 200 jumping jacks and 200 bird dogs!

For the jumping jacks:

1. Place your feet wide apart. Jump your feet inward as your arms go up; your hands should touch above your head.

2. Come back to the starting position. This is one rep.

TIP: The faster you go, the more your heart rate will increase, and the better workout you will get!

For the bird dogs:

1. Get down on all fours on a mat. Extend your right arm and left leg so that they are in a long line with your back.

2. Bring your right elbow and left knee together, tucking your abdominals under so that they contract. Return to all fours and repeat with the opposite arm and leg. This is one rep.

TIP: Really engage your core when you crunch in. Try to stretch out as far as possible, elongating through your hand and foot, when your arm and leg are extended.