I bought these tires and thought to myself: I will already get no bruises! I have but then. Also looked pretty bad. If you put on a pair of pants with a higher waistband or a top with little thicker fabric, but it's not a problem. One can super while watching TV etc. hula Hoopen and the result can also be seen. I did not quite untrained abdominal muscles, but still notice after 10-15 minutes that I get a little sweat. There are also trained at the same other parts of the body and you can make a regular basis, so to recommend a total no effort.
