Why is My Bathroom Cold?

In this Question and Answer session, we sat down with Clark Zacaroli, Clark is a business development manager for Runtal North America, division of the Zehnder Group, a Swiss manufacturing organization focused on indoor air quality and comfort systems. Clark has spent the better part of 30 years working internationally in the heat transfer industry, including industrial and HVAC segments.

Clark, Why are bathrooms always so cold?
I have seen some people using fireplaces, but the reality there is something like that is super, super expensive and probably not realistic for most homeowners.
Do you ever see anybody use baseboard radiators in bathroom situations or is it mostly the towel warmer?
I see a lot of people trying to compare heated flooring vs towel warmers and baseboard radiators. What's the difference in your opinion?
These are good options for other parts even other parts of your home outside of your bathroom. Is that correct?
Why would someone want to take a look at Runtal products versus all the other ones that are on the market today?