This looks really cool for CORE!

After that comment, i really wish the video would work for me.
 
Wonder if there's a sex version?

That is the sex version, just add extra padding, and a harness from the ceiling... I've only given it a minute's worth of thought, but I'm sure I could come up with a schematic if given about 30 more minutes. :D
 
that looks amazing. for the first time in my life, i want to do cardio... in the gym
 
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