Hey, I saw this question and I immediately remembered one or two teachers that kept saying that drinking cold/hot drinks before and/or during playing any woodwind or brass instrument was a bad thing, ...
While it seems like it's probably best not to expose anything to extreme climates, will keeping a guitar/bass amplifier in a car for a day, in either hot or cold climates, have any short-term effects ...
Does ambient temperature (i.e. winter vs summer) or food/drink temperature (i.e. cold vs hot) have an effect on voice: Texture Pitch/range Strength
A few years ago our church band had a gig playing early in the morning to a volunteer crew to get them pumped for the day ahead. It was about 7AM and in the 30s F. It's a good thing I was only playing ...