Correction to my two previous comments:
In #15, the exercise motion is good. Almost looks like the figure has small weights in her hands, but is there a way to work in a silhouette or suggestive image of and indoor cycle, like the Keiser M3:
http://mseries.keiser.com/m3.htmlFor #5, it's clear that there is a cycle, but is there a way to capture the spirit of it also being a gym, perhaps by adding some weights?