This week's question: How much water do I really need to drink?  What is the benefit? And, do teas or low calorie fruit drinks count toward your daily intake?

Aaron Guy: Hydration is the key to success with any weight loss or fitness program.  Think about this: Your body is approximately 80% water.  Some benefits of proper hydration include:

•    Increased percentage of fat used for energy purposes.
•    Decreased appetite.
•    Distribution of nutrients throughout the body efficiently.
•    Decreased fluid retention.

According to the National Academy of Sports Medicine an average of 96 ounces of water should be consumed daily and should be increased if the individual is exercising briskly or in a hot climate.  A good rule to remember is that if you are feeling thirsty it means that your body is already dehydrated. 

When it comes to hydration nothing scores higher than plain water. Calorie free flavored waters and sodas contain artificial sweeteners and my general belief is that they should be consumed sparingly. Also be aware that sports drinks and vitamin-enhanced waters contain high levels of sugar and should only be consumed if exercise exceeds 60 minutes. 

If you’re having a hard time getting your daily intake of water try adding things like lemon or cucumber slices.  White and green teas are also a great way to add flavor and variety to water without any sugar or calories.

I love talking to people about food. I can't help it. I'm a little obsessed with finding something new to munch on. Let's face it, raw almonds are b.o.r.i.n.g. There are only so many a woman can take.

So, when Kirstie Alley was here for a show taping I jumped on the opportunity to ask her about a few of her favorite foods. Kirstie, who is launching a new reality show next year about her path to better health, is constantly in the tabloids about her weight. I can't imagine living under that kind of a microscope. To her credit, she handles it all with quick wit and charm.

Here's what Kirstie had to say …

I have to admit, I was a little worried about weigh-in this week. I've been battling a head/chest cold thing for days which meant zero gym time. And, if I've learned anything from all this it's that no gym time means trouble. To my complete delight I lost 4.6 pounds. That brings my total to 74.2!