When my new definition of multitasking is coughing ,sneezing and peeing at the same time.

When I noticed how young all police officers look!

When my desire to not have a hangover or a DUI compelled me to almost always avoid drinking.

Menopause and it’s lovely symptoms.

When I look in the mirror and wonder “How the hell did that happen—and so quickly?”

When having fewer wrinkles and not wanting skin cancer became more important than being tan.

When being comfortable and taking care of my feet and hips outweighs choosing 3-4 inch heels.

Some of the things I notice might be more an effect of maturity as opposed to feeling or being past the middle point.

By your measure, I was old back in college.

I woke up with a sleep injury. HOW do you injure yourself sleeping???

I can't read without my glasses. I wake up super early. My hair is more grey than brown. My injuries don't heal as fast. I still enjoy sex but the recovery time is longer.

I was training MMA about 10 years ago and these kids were getting these nasty injuries, but recoverying pretty quick. I knew if I got even a back sprain, my days as a fighter were gonna be numbered. I felt old right then....haha

I'm old? OK, OK, I'm old. I think it was kind of the same thing someone else mentioned below; jumping down from even relatively low heights became daunting, running turned into very cautious loping, climbing ladders is scary, routine things that I didn't much think about doing when I wasn't "old." Then there was the realization a few years back that the little baby girl I used to cradle in my arms was a grown woman with a whole life of her own.

When I asked a younger work colleague if they had ever seen the matrix. He was 19 and said that he doesn't really watch 'old' films. This happened last year. I wanted to punch him. No way is the matrix an old film

I'm 51 and filing for disability.

A week from today, I will turn 60. I'm still not old.

When some smart ass teenager called me "gramps"

...when I realized I was more mature than my father.

After my wife took off with my daughter and filed for divorce. I went grey after that.

When half the worlds rock stars keep dying and I'm thinking 'They were how old?'

When it took two shoulder surgeries just to keep working out, 10+ years ago. =[

When you realize the Music is way too Loud!~~~~

The people around you look like they could be your daughter or son!

Staying home more than going out, even on the weekends!**

LOL!

Wow, I just read your profile and at 45 , you consider yourself old?

When I got diagnosed with a life-threatening disease like leukemia. Most of my friends/exes have been younger than me.

I looked...you are only 45 years old....that is not old. Wait until you are Medicare, then you might be old.

Not sure if it was the first time, but when I went to the doctor's office, and the doctor came in and he was a good decade younger than me!

never, dear, never.....

My kids make me feel old a lot but that's normal. One thing that makes me feel old without their influence is singing along to grocery store music. I was in Wal-Mart the other day and heard Anne Murray and I was so excited because I hadn't heard her for so long, I forgot she even existed!

As I read your question it occurred to me.

Oh shit! I am old.

Thanks for that.

When my friends started making babies on purpose.