I sometimes jerk off upside down. Its helps to increase, blood flood to the head making cuming more narcotic like.
That is why I always have my wife and I have sex while hanging upside down wearing inversion boots.
I gotta go now and check out the new Dalton Rush fitness gym.
I bet the gym carpet and flooring is 2nd to none in that gym!

I am going to work legs and would like a nice carpet and/or flooring to puke on between sets