Unless you believe that old fountain of youth legend, there really isn't any way to turn back the time. But Madonna's personal trainer-to-the-stars Tracy Anderson thinks she can keep the Material Girl looking like she hasn't aged a day since the first time she sang Like a Virgin.

"I want to keep her body looking like it's 20 years old," says Tracy. "Because you don't have to have saggy arms, or poor skin tone in your 50s, or not have cute hips. It just doesn't have to happen. [A superfit body] should start being your standard when you're young - and after that, why should you ever want less?"

Though I can get behind the whole "age gracefully" movement, I like Tracy's line of thinking. We can't all have our 20-year-old bodies back, but growing older doesn't have mean giving in to gravity. Fitness is just important at age 50 as it is at age 20 ... why let those kids have all the fun?

Has your workout routine helped you defy the effects of aging?

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Worried about getting loose saggy skin if you lose weight? Or maybe you're already dealing with a little extra around the arms, abs, or thighs because you've slimmed down in those areas.

The good news is that in all but the most extreme of cases your body can be trained and helped to tighten that loose skin up so your new beautiful figure can shine through without interference. eDiets has come up with a couple of moves you can do that can help if you do them consistently -- there's one targeted to arms and one targeted to thighs, so get to it!

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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 two per week to publish on That's Fit! Learn more about Fitz here.

Q.Hey Fitz, I just don't like veggies. Do I really need to eat them, or can I take a multivitamin instead. Aaron.

A. Wow Aaron! Out of the hundreds of veggies out there, you don't like any? That seems odd. It's funny. Even though I started teaching fitness at age 18,I too refused to eat any sort of vegetables except for those found in a house salads until I turned 21. I had a mental block against them and considered them gross I guess. Funny thing happened to change my mind. I met the most gorgeous guy in the planet and he cooked me chicken and broccoli one night. I was totally grossed out, but wanting to impress this man.....I gave em a try. Turns out I actually did like broccoli. I also ended up loving the onions and peppers he grilled and put on top of pizza the next week.

I didn't like veggies because I hadn't tried them. I predict you're in the same boat. Veggies are vital to a well balanced diet. They're huge on vitamins, high on fiber and low in calories. Why wouldn't you want to make an effort to love these things? They'll keep your skin pretty, nails strong, vision clearer and digestive system moving at a super pace. Nonetheless! I now love veggies and crave them in large quantities. I also married that hot guy who introduced me to the. So I say, "Try them, try them Sam I AM! You will like cauliflower and yams!"

Q. I had my daughter three years ago and although I have lost a lot of the pregnancy weight, I have been left with a deflated belly. Just a saggy, loose flabby belly. I have been told there is nothing I can do to tighten loose skin. Can I re-tighten my stomach? Or is liposuction/tummy tuck the only solution? Not that I would go that route. Brenda