Each muscle has a function, and the pecs are no different. Watch this quick video and never forget how to work your chest ... even if you're in the desert with Bear Grylls!

Visit Fitzness.com for more training videos, celebrity interviews and delicious low fat recipes!

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Have fitness questions? Fitz has your answer. Our ThatsFit.com fitness expert -- and now your own virtual personal trainer -- will help you get fit, increase your overall health and do it in a fun way. Drop your questions here in the Comments section below and we'll choose one per week to publish on That's Fit! Learn more about Fitz here.

Q. Hello Fitzy. I need your help! I'm six feet tall and last year I was close to 300 pounds. I am now down to 250. I'm still in the process of losing weight but am stressed because I cannot get rid of my "man boobs."They're devastatingly embarrassing. I wouldn't take my shirt off at the beach if you paid me. What can I do to make them go away? Liam

A. Hi Liam. Isn't it funny how big boobs are super cool on a chic but not so much on a guy? Interesting. Listen, I feel for you. Man boobs are not the status symbol of the day, and it's hard for most people to deal with any unusual bulging pockets of fat. Man boobs, love handles, and saddles bags; nobody wants 'em!

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Having a consistent workout routine is a good thing. Never budging from it though, can be a bad thing. Our bodies tend to adapt and become mighty efficient if we tell it to do the same thing over and over. We're a smart species! What can I say?

The October issue of Women's Health magazine has a great little section on various ways you can tweak traditional exercises to make them challenging once again. Give them a looksy and then give them a try. A little difference goes a long way.

Tweak Your Training(click thumbnails to view gallery)

Here at That's Fit, we're forever grateful for the service, courage and sacrifice made by the heroic men and women who serve as military, law enforcement officers, and firefighters. We're so grateful, that we'd like to dedicate some features to both showing our heroes off, and learning a little bit in the process as well. If you serve your country courageously, are a veteran or know someone who does, please return this form completed to Fitz along with a photo and we'll share your story with the world.

Name: David Anthony Espeut

Age: 34

Heroic Occupation: Lieutenant (US Navy) Resigned- CG-52 (USS Bunker Hill); FFG-43 (USS THACH); Naval Special Warfare Basic Underwater Demolition/SEAL (BUD/S)

If you're in the military...where are you? N/A Resigned from Navy as of September 2002, Suspended Special Agent Application to FBI in favor of Starting/Raising Family in Australia

How often do you exercise? Every day: 30 to 60 minutes.

What type of exercise do you do? Jogging (10-20 minutes), walking the dog (10-20 minutes),bench, pull ups, dips, push-ups, abdominals, shoulder exercises, and curls with dumbells. I also freestyle swim at least once per month. Chasing My Kids= Never-ending

What gets you to workout, even when you're feeling lazy? Fitness is just part of my lifestyle. I feel bad, guilty, and weak if I don't. Getting ones blood pumping is a great way to start the day.

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Just because summer isn't for several more months, it doesn't mean that it's time to let our exercise programs go. People tend to put on more weight during the colder months for a few reasons: 1) Because they probably won't be donning their bathing suits at the beach for quite some time, and 2) Because our bodies are designed to slow our metabolism down -- a carry-over from our more primitive days when food sources became more scarce during the cold season.

For these reasons, and probably about eight thousand others, it's a smart idea to keep stoking the flames of your metabolism right through these frosty months. So, to help you do just that, here's an exercise that that will help you burn some serious calories while toning up your legs.

Called the Step-Up, this cardiovascular movement will help you speed up your metabolism as you strengthen and tone your quadriceps, glutes, hamstrings, and even your calves. To perform this exercise, start by standing in front of a weight bench or any safe substitute for one (tip: take two milk crates, spread them apart, and place a firm, wooden board over them -- a great, makeshift bench). Next, take your right foot and place it on the surface of the bench. From there, step-up onto the bench, using your right leg to power the rest of your body up.