The shower can be a dangerous place - a friends died in the shower (slipped and hit his head). I've seen people slip in the shower and, in attempting to recover, launch themselves across the bathroom (potentially into cabinet corners et al). So I avoid dancing and exercise while showering.
Make sure your shower has grab bars, a non-slip pad and is, in general, a safe place to bathe. Occasionally consider, if only for a moment, what you might do were you to slip.
Bath-tubs merit mention in the National Safety Council's data on accidents. See
"The most common causes of death due to injury in the United States:" at
See also
"That Daily Shower Can Be a Killer (nytimes.com)"
https://news.ycombinator.com/item?id=5145268
Make sure your shower has grab bars, a non-slip pad and is, in general, a safe place to bathe. Occasionally consider, if only for a moment, what you might do were you to slip.
Bath-tubs merit mention in the National Safety Council's data on accidents. See "The most common causes of death due to injury in the United States:" at
https://danger.mongabay.com/injury_death.htm