Are there any reviews out there of scientific studies conforming or invalidating the common claim that sexual activity is a good way to burn calories? Have quantitative measurements of work exerted (i.e., energy spent) during sex ever been undertaken?
I can imagine that the popularity of this idea has lead to some testing over the ages, but use of the scientific method might have been impeded as
- it was a rather taboo topic until the sexual revolution
- there are so many variables involved (type of sexual activity, just to name one).
I tried some research myself, but generic web search engines for such keywords are overloaded by content of a, let's say, totally unacademic type.