I learned the hard-way that
eating skiing and IEM music just don't work together that well.
I thought I was being smart in preparation for a Killington ski week, and had bought a shiny new Sony Walkman cassette player. I had wired the Walkman thru my ski gear, so that I can have 'energetic' music while skiing.
The J.Geils band '
BloodShot' LP was one of the ripped cassettes for my skiing enjoyment... Bad mistake!
It took me the better part of the first day on the slopes to finally realize that I was missing my ski 'tempo' because the music was out of sync with Killington's bumpy north slope: Unlike West-Coast powder, East-Coast packed/icy slopes require speed and litheness on skis. << The result was no bodily damage, but I never listened to music while skiing again.

Music also does not mix well with motorcycling either... imo
I've heard of people mixing scuba diving with music: JUST WRONG!
I hope the above is not OT.