I was mixing down a military march that I noticed a pain in my ears! After resting in the bed for 2 hours, I hear much better now.
I did a search, I found several useful things. Just wanted to share with you guys and maybe you can add more to it.
Preventing Hearing Damage When Listening With Headphones
Type, Degree, and Configuration of Hearing Loss
How to Prevent Hearing Loss for Musicians
Professional Musician Full Custom Ear Plugs
Free Hearing Test Products
I just bought a pair of ER-20, and I am going to buy a dB meter to prevent this to happen again.