it was my understanding that the room had to be cool or else the heat would slow down the speed of the nerve signals.

i have done quite a few emg/ncs's the last 10 years. at least 8 probably more because i have legs, feet, arms and hands involved. although i wouldnt say i would like to do emg/ncs's as a hobby, its not something i dread doing at all. i dont find them all that bad and for me they are informative first as a diagnosis and later to keep track of progression. i do them every 3-4 or so years now.