4th Sign

You don't get the new music video. Contrary to what you suspect, there's no conspiracy among TV, ad, and music executives to make you feel old. "You are no longer the target of marketing executives popular culture," says Elaine Wethington, Ph. D., a sociology professor at Cornell University. Popular professor at Cornell University. Popular culture is set Cornell University . Popular culture is set up for someone with younger tastes.

How to Delay It

Keep abreast of trend by regularly tuning in to TV and radio. Read popular magazines and surf the Net. Meditate regularly, open your mind and stay young at heart.

5th Sign

You need a nap. No wonder you're not getting as much quality sleep as you used to. When you were 25, about 20 percent of your sleep was deep, slow wave, restorative sleep. By age 35, you're down to less than five percent and fading, according to recent study.

How to Delay It

Exercise regularly, try to be active on your waking hour, read, do some gardening, go out with friends, watch tv. This will make you tired at the end of the day and it will surely gives you a goodnight sleep.

6th Sign

You easily get annoyed! "With the aging process, we become more irritable than before, says Stanley Teitelbaum, Ph. D. "We're more rigid and less comfortable with being uncomfortable. We react more to factors like noise and smoke."

How to Delay It

Stop covering your ears and start dancing in the music. Physical movement can reduce stress that makes you think everything is so loud, says, Raymond Shaw, Ph.D., professor of Psychology at Merrimack College.