Your body changes when you get older and eventually everything sags, aches, or both. Happy Wednesday?

A new survey found out the ages when the average person’s body parts start hurting, aging, or otherwise changing. Here are the results:

Headaches and migraines start at 24.

Back pain starts at 33.

Knee problems start at 37.

The first gray hair shows up at 39.

Joint pain or arthritis starts at 40.

And hot flashes start at 50.

The survey also found people start feeling their body generally deteriorating when they hit 30 and one-third of people say the bad choices they made when they were younger are catching up with them.