I'm big on activities that kill two birds with one workout. And one of my life goals is to actually have moments of being "fun mom," so I like to look for ways to combine exercise with playtime. Here's my five best kid-exercises that require no equipment except a hyped up small child or two.

1. Piggyback rides. Don't just walk, run, and see if you don't get at least a little sweaty.

2. Freeze tag. When you get frozen hold a squat position or plank. Then run like the wind when you are it. And don't hang out at base.

3. Airplane. Lay on your back, hold your child's hands, and pull them onto the bottoms of your feet. Now bend and straighten your wings. Junior's flying while your legs are dying.

4. Blurty sit-ups. Get in sit-up position, and have your kid stand between your feet. When you sit up, blurt them on the belly. Fun ensues.

5. Squat to press. Hold your child by the waist, and squat down. Then stand and lift your kid (using good form, please!) If you have a small enough child, straighten your arms and press them into the air. Repeat until your child is tired or you are toast, whichever comes first.