I went to school with a girl who chewed gum everyday, she ended up in hospital with a stomach ulcer.
When you chew, your brain sends signals to your stomach to produce acid to break down the food that is incoming, but if you don't actually consume food, the acid will just continually build until there's a problem.
Basically just saying be careful, though I'm not sure if there is any warning signs you can watch for.
Funny enough whenever I move house I always go with BT as the initial ISP, cause I've found they are best when things go wrong.
New house didn't have a phone line, waited a few days for the engineer, a 3rd party guy was here for a few hours and left without getting me online. About a week later a proper openreach engineer showed up and got me online within 20 minutes.
I like the quirky creation engine, sure it's old, there are plenty of old engines that have just been maintained better.
And yeah it's floaty in terms of controls and feedback but so is the frostbite engine and everyone seems to just love that...