If your arms and lower body have ever ached from lugging kids around all day, our celebrity trainer has a quick and easy exercise for you.

Fitness guru Kathy Kaehler (also a mom to three boys) has an exercise that promises to strengthen your lower body, core, and arms. Making you all the fitter to haul your little pretties around.

Day 1: Kathy shows us how to keep those upper arms from flapping in the breeze. (Don't pretend you don't know what we mean.)

Day 2: Kathy demonstrates how to firm and tighten your glutes, hamstrings, and quads with with a simple deck of cards and two minutes of time. If you have any concerns about the junk in your trunk, then you won't want to miss this!

Day 3: Kathy demonstrates how to strengthen your shoulders, upper body, and core. Strong core muscles make it easier to do most physical activities--from getting a glass off a top shelf to bending down to tie your little ones' shoes.

Day 4: Kathy demonstrates quick, but effective, workouts for busy moms who are desperate to banish their post-baby bellies. All you need is a deck of cards and the desire for tighter abs.

To buy Kathy's books, click below:

To find out more about Kathy, go to her Web site.