Autumn's cooler weather may be starting to chill the air, but don't let it put a freeze on your fitness and nutrition habits. Enjoy the best autumn has to offer, healthfully.

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If you're busy prepping for your upcoming holiday travels, you may want to consider what nutrition experts have to say about eating healthy at airports.

Definitely avoid the fast food spots, they say. And since flying makes you incredibly dehydrated, they recommend picking snacks with high water content -- like apples and pears. Instant soup works too, but only if sodium levels register at 500 milligrams or less.

More tips: During airport layovers, give dairy foods such as yogurt and cheese a try. They contain amino acids which increase blood flow and tryptophan which promotes relaxation and calmness during air travel. Almonds are another wise choice -- just limit your portion to a healthy one-ounce serving.

Low sodium is key for travel. So pass on the potato chips and try something like low-sodium beef jerky. It's low in calories and carbohydrates and has lots of protein. Optimally, though, whole foods top any sort of processed food. The fewer the ingredients, the better.

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One of the reasons I would hesitate to try a low-carb eating plan is that fruit is sometimes banned from such diets. Frankly, fruit is not something I'm willing to give up because it's one healthy thing that I really enjoy. But if you're going low-carb, you don't necessarily have to give up fruits -- some are better than others. According to Mark's Daily Apple, here's how they stack up:

• The best low-carb fruits include berries (all of them), cherries, apples, pears, grapefruit, peaches, apricots and figs.
  
• The worst low-carb fruits are mangoes, melons, papayas and pineapples.
  

I would sure miss my mangoes and melons, but I think the low-carb fruits sounds pretty tasty too, don't you think?

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