2nd floor creaks and bounces

[ap]

Hello, We have a 2-floor house in GA that is about 10 years old. Lately, we are noticing a lot of creaks when walking in the second floor and also the floor is a bit bouncy.

Is this dangerous ?

We are telling family to not run upstairs. Not sure if this is safe to do or not.

Do builders fix these things and/or is there anything we can do?

THANKS

[css]

Since it's been winter, maybe it's because everyone gained a few pounds.

If nothing else, paint the steps silver.

Hope this helps.

[mm]

Just don't hit your head.