Nice guide, but I feel it misses some tips. Some I recommend: - wear hearing protection foam when: going to a concert, on the plane (even with an ANC headphon

Nice guide, but I feel it misses some tips. Some I recommend: - wear hearing protection foam when: going to a concert, on the plane (even with an ANC headphone on top of it sometimes), when sleeping at a loud hotel, etc. - use ANC headphones when taking a call on the phone or computer: it allows lowering the overall volume level while hearing better; - use ANC headphones on the metro if it regularly screeches with piercing noises; I wish bicycle helmets would be designed to decrease wind noise, to better hear the environment, or announcements on the metro in Munich to have a lower and more consistent volume, or for cities to just be quieter overall.