Quote Originally Posted by pooks View Post
Does that mean you're working harder, or you just feel like you're working harder?

It means you 'feel' like you are working harder, or that it is more strenuous - even though the work you are actually doing xx watts, is the same.

Example, doing 200 watts for 20 minutes on the indoor trainer will feel 'harder'/more difficult for many people (not everybody), than doing 200 watts for 20 minutes outdoors.