You know that you need to add weight-lifting to your workout routine but you may not be sure which routine is best.

Just like any other time you start a fitness program, you'll want to start out slowly.

First, you'll need to start with one or two sets of eight to 12 repetitions. If you're older, injured or unsure of your strength you can do 10 to 15 reps with less weight. When you can lift a weight eight to 12 times and it gets harder to lift during the last rep, you'll want to add a little weight and decrease the reps.

Even if you're a seasoned weight-lifting veteran, alternating the workouts is key. You shouldn't do arm workouts and shoulders exercises on consecutive days. You should avoid working on legs consecutively, too. It's important to vary how you're focusing on strengthening different muscles. For instance, you may want to start by isolating the shoulders. At your gym you can do an overhead press, lateral raise or front raise to work on this body part. Start with two sets of eight to 12 repetitions.

Other parts of this workout might include strengthening the chest via the bench press, chest press machine or push-ups. You can work on your back as well in a seated row machine. To build your biceps you can work on bicep curls, hammer curls and concentration curls using hand weights. As for the triceps? You can do tricep extensions.

As you alternate days to work on your lower body, you can try squats, lunges, leg-press machines, deadlifts or calf raises. As for the abdominals, there are always crunches, oblique twists and pelvic tilts.

If you begin your weight training regimen at your health club, the fym should have staff to supervise and answer specific questions.

Now that you've got your weight-lifting routine set, check out That'sFit's cardio workouts.

Regular exercise is a vital part of a healthy lifestyle, but is there such a thing as over-exercising? You bet -- and according to Sarah Brown, fitness expert for ThatsFit.ca, it's more common than you think. What's more, it can be harmful to your health.

If you think you might be guilty of over-exercising, ask yourself a few important questions. Do you seem to spend most of your free time at the gym? Have your sleep patterns changed? Do you seem to be more susceptible to illness than others? Do you suffer from more aches and pains than usual? If the answers to most of these are a yes, it could be your body's way of telling you to slow down.

Instead of working out more, work out better with tips from this celeb trainer.

Exercise physiologist and certified personal trainer Bob Greene has helped millions of people slim down, most recently with his online program TheBestLife.com. The best-selling author shares the sure-fire strategies for losing weight, protecting your health and living your best life.

The number of Americans with diabetes has tripled since 1980, and as many as 95 percent of those diagnosed have Type 2 diabetes -- the kind that is often triggered by obesity. Diabetes and its precursor, pre-diabetes, have reached epidemic levels in this country. Sadly, it looks like this trend will continue to grow, as nearly one in five people has pre-diabetes.

These are sobering statistics, but there is good news. You can avoid these two conditions by making easy but significant lifestyle changes. This is the premise of my new book (co-authored by endocrinologist John J. "Jack" Merendino, Jr. and nutritionist Janis Jibrin) "The Best Life Guide to Managing Diabetes and Pre-Diabetes," out Tuesday, November 3.

To reduce your risk, use the following strategies:

• Maintain a healthy weight. Many of the same weight-loss tips I recommend in "The Best Life Diet," such as eating regular meals and snacks and avoiding certain foods that trigger weight gain, also work for fighting diabetes. That's because being overweight or obese significantly increases your risk for pre-diabetes and diabetes. In fact, people who carry their weight around their middles are most at risk for the disease. In one study, people who had the largest waistlines were 10 times more likely to have diabetes than those who had the smallest. To find out your waist circumference, take a measuring tape and wrap it around your bare abdomen just above your pelvic bone. The tape should be snug, but not pressing into your skin. Exhale a little and measure. The healthy cut-off: Men should be less than 40 inches; women should be less than 35. (If you're of Asian heritage, the numbers are 38 for men and 33 for women.)

Overwhelmed by all of the "Follow Friday" recommendations on Twitter? Each week AOL Health's Twitter alias Healthpop and That's_Fit search the Twittersphere for the greatest diet and fitness Twitterers, and each week, we'll highlight the best-of their best tweets (no Twits here).

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Obsession with youth is not only the plague of modern society. In the 1930s, a retired British army officer stumbled upon a remote monastery in the Himalayas where the monks were rumored to have found the fountain of youth. Amazed by their age-defying health and energy, he attributed their vitality to a series of yoga-like postures they practiced daily – as had generations of monks for thousands of years. These Five Tibetan Rites are believed to work by stimulating and balancing energy centers in our bodies called chakras that correspond to each of our endocrine glands. "They're like electricity transformers, receiving and regulating energy and transmitting it throughout the body," explains Sydney-based Carolinda Witt, who's been teaching the rites for more than seven years.

Witt says practicing The Five Rites is like flicking these energy switches to ON. And they're easy to do. In fact, she's made modifications that focus on breathing and building core strength so you don't have to be a veteran yogini to get yourself, well, turned on. Plus, it's yoga, so you'll create a leaner, stronger body! Start with three repetitions of each posture daily and in order. Add two per week until you're doing 21 in about 10 minutes. When you finish each move, pause and take three energy breaths. The directions are below.

Rite #1: Spinning
Harmonizes chakra spin rates. Improves balance, focus and coordination.

Rite #2: Modified Leg Raise
Strengthens and tones the core, hips, lower back, legs and neck.

I like to call flexibility training the ugly stepsister of the exercise world because everyone seems to overlook it until it's too late. Eventually you strain or sprain something or you're so stiff from step class that you want to cry. I teach yoga and Pilates, and my favorite party trick is bringing my left heel over my head and feeding myself a little snack between my toes. I know, I know, it grosses out my husband, too. For many people, however, stretching does not come so easy. But being limber is not just about impressing (or horrifying) people at cocktail parties, is an essential part of being truly fit.

Three general things make up your flexibility potential:

• Age (younger folks are more flexible)
• Gender (women are typically more supple)
• Climate (Muscles are far more pliant in warmer temperatures)

Below are the five stretches everybody can practice a few times a week. Do them after any other workout, and you'll soothe all of your major muscle groups in less than 10 minutes. I'd also like to give a shout-out to the practice of yoga. Since 15 million or so people began practicing yoga in the last decade, flexibility training has finally become as important to fitness as cardiovascular training and strength training. Yoga is the ultimate, full-body stretch, for sure, and some studies show that stretching makes your body much stronger, too.

When you move your arms in virtually any direction, your shoulders (a.k.a. deltoids) are either in charge or, at the very least, involved. The ingenious design of your shoulder joints makes the shoulders one of the most mobile, versatile muscle groups in your body. It also makes it one of the most vulnerable. Fortunately, if you commit to doing some basic shoulder training on a regular basis you'll keep your "delts" strong and supple and have a better chance of staying injury-free. It'll help balance out your body's curves too. Want to slim your hips? Chiseled shoulders broaden the upper body and polish your posture, creating the illusion that you've shrunk and reshaped your hips. Plus, firmed up shoulders look killer in tank tops. To get your shoulders in shape, try exercises.

Click through the photo gallery below for our step-by-step workout guide.




Ideally, you should own three sets of dumbbells for shoulder work; typically 3, 5 and 8-pounders. When you first try the accompanying shoulder routine, start with your lightest weight. Do 1 set of each move, 8 to 15 sets per set, 2 to 3 times a week. Once you can easily complete 15 reps of an exercise, move up to the next heaviest weight or try the "challenge yourself" version. Rest assured that going heavier won't bulk you up -- we promise. On the contrary, it'll help you shape, tone and strengthen your shoulder muscles a lot quicker than sticking with a weight that's too light to have an impact.

Mistakes to avoid: Don't arch your back as you lift and keep the movement in control so you don't rock back and forth to help lift and lower the weight. To avoid shoulder and neck pain, don't clench your teeth, hitch your shoulders up, or drop your chin to your chest. Keep these technique pointers in mind and you'll create a beautiful pair of shoulders with minimal risk of doing any damage. (If you tend to have chronic shoulder pain, consult with your doctor or physical therapist before you do these moves.)

Shoulders benefit from a bit of variety so change up your routine every month or so by doing 1 to 2 workouts with exercise bands or by tossing in a set or two on the shoulder press machine at the gym. Yoga is surprisingly good at toning and redesigning shoulders because so many upper body poses depend on them to move and support the entire body. Swimming, especially the crawl stroke, is also a good shoulder shaper.

Exercise can sometimes be a miracle worker. Not only can it help you lose weight and help prevent heart disease, it can also lessen arthritis symptoms and improve memory loss. It can boost your mood and your sex life and, most important, even help with cancer prevention. As Breast Cancer Awareness Month draws to a close this week, it's important to mention just how much exercise can lower your risk for this deadly disease.

A recent review of 954 studies sponsored by the World Cancer Research Fund and the American Institute for Cancer Research found that exercise, healthy eating and keeping weight under control can help prevent nearly 40 percent of breast cancer cases in the United States.

The study notes that exercise, in particular, may help reduce breast cancer risk not only by strengthening the immune system but also positively affecting hormones in postmenopausal women and helping with weight loss. Being overweight puts you at an increased risk for developing breast cancer because fatty tissue produces hormones and growth factors, such as estrogen and insulin, which may promote cancer development. Recommendations for exercise, which are echoed by the American Cancer Society, include being physically active for 30 minutes a day.

Scared of needles? Thirty minutes on the bike is more effective than heart surgery.

Skullcandy is a brand-name in music listening devices, including headphones, earbuds, MP3 players, hands-free devices and more. Founded in 2003, the highly-successful Skullcandy company was founded on the principle of creating portable audio equipment suited to an active, athletic lifestyle, with a particular emphasis on sports like snowboarding and skateboarding. Skullcandy's products are aimed at action sport enthusiasts but have reached a much wider demographic -- appealing to sporty and non-sporty types alike.

Sold in over 40 countries worldwide, Skullcandy products are known for their unique, hip hop-inspired design and their versatility throughout a variety of activities. Their ear buds are particularly popular, having been dubbed the "world's coolest ear bud" by CNN Money.

SlimQuick is a weight-loss product that claims to be the first fat-burning aid created especially for the fat-storage issues of a woman's body. The weight-loss formula uses vitamin and herb complexes to "overcome the physiological and hormonal barriers" of losing fat."

Reviews of SlimQuick are mixed. On the positive side, the SlimQuick program advocates an exercise program to accompany the use of the product. One testimonial on the SlimQuick web site said, "I was faithful to the diet and exercise program that was outlined. I have never had such quick and excellent results in any diet program."

But there are dissenters out there, too. "Products like SlimQuick perpetuate the growing trend of misinformation under the guise of 'science.' At best, it offers false promises of health and fitness in a bottle," said Melissa Urban, owner of CrossFit 603. "At worst, it could be dangerous to your health."

First Lady Michelle Obama has killer arms, is in the best shape of her life and loves living a healthy lifestyle. She is certainly leading by example as she encourages America's children to get fit, too. The First Lady recently held a Healthy Kids Fair on the South Lawn of the White House, where she gave some healthy advice to some very lucky kids. And she drew from her own experiences, not only as a mom, but as a child to her own mother. "When I was growing up, fast food was a treat," she said. "We had pizza ... once every semester when we got good grades." In very motherly fashion, she then told the kids to eat their veggies: "We don't want to hear the whining. We want you to eat it. Just eat it, right?"

Mrs. Obama isn't just taking on unhealthy eating habits though. She issued a challenge to kids to be more active every day. "Turn off the TV on your own. Get up and throw a ball. Run around the house. Don't break anything, but move," she says. It's pretty obvious advice, but advice that needs saying these days nonetheless. And, of course, she practiced what she preached by having a go with a hula hoop and jumping rope.

She's taken on a tough cause -- changing the diet and exercise habits that are the foundation of our country's obesity epidemic -- but the First Lady seems up for the job. What do you think? Can Mrs. Obama inspire America to change its unhealthy ways?

Click on the gallery below to learn about Michelle Obama's workout routine.

Michelle Obama might be known for her incredibly toned arms, but she isn't the only lady rocking gorgeous guns. Check out who has the best arms in Hollywood.

Power yoga is an exercise-based approach to traditional yoga. Based loosely on the Ashtanga style of yoga, power yoga is a vigorous vinyasa-style practice that was designed as a means to get fitness-minded westerners interested in yoga. Power yoga sessions do not follow a specific sequence of poses, and subsequently practices can vary greatly between classes and instructors. However, every practice is based on the fundamental goal of increasing flexibility and strength through physically challenging postures.

Postures in power yoga are typically linked together by a sequence called a vinyasa, which includes downward dog and upward dog. The purpose of a vinyasa is to create heat and energy in the body and to "refresh" the muscles after the previous pose. Power yoga sessions often also focus on a style of breathing called Ujjayi breath, a strong breathing technique that forces air through the back of the throat.

Unlike most traditional yoga practices, which focus on the spiritual and meditative aspects of the poses, power yoga is more focused on the physical aspect of the session, and it is most often used as a means to get fit or lose weight rather than achieve enlightenment.

More Yoga Terms Defined from That's Fit:
Ashtana Yoga
Kundalini Yoga
Hatha Yoga

Bootylicious pop star Beyonce Knowles has one of the most coveted bodies in Hollywood, so just how does she do it? Beyonce, 28, dances her butt off -- literally. When she's not performing her high-intensity shows, Beyonce is rehearsing for hours at a time. In fact, prior to touring, rehearsals will regularly last for 12-hours, and she spends the entire time dancing in high heels to prepare for the concerts. But that's not all -- Beyonce also admits to doing "regular" workout things like running on the treadmill and doing squats. She reportedly keeps her abs in shape with numerous crunches, bicycle crunches and planks.

But perhaps Beyonce's best workout secret is that she fits exercise into whatever she does. She admits that she tones her butt and glutes by taking the stairs whenever she can, and she spent a recent vacation with her husband Jay-Z jumping on trampolines and jet-skiing in the tropics. But she's not afraid to take some downtime when necessary too. "Either I'm doing absolutely nothing and relaxing -- reading a book, sitting by the ocean and not answering any questions -- or else I'm hands-on and giving 100 percent, working really hard," she says.

And, of course, Beyonce watches what she eats, even trying controversial juice fasts (for which she apologized later) when she needs to slim down in a hurry.

Overwhelmed by all of the "Follow Friday" recommendations on Twitter? Each week AOL Health's Twitter alias Healthpop and That's_Fit search the Twittersphere for the greatest diet and fitness Twitterers, and each week, we'll highlight the best-of their best tweets (no Twits here).

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