While one of the advantages of a home workout is that you don't need much (if any) equipment, it can pay to invest in some simple kit that will take your routine from average to amazing. One such item ...

And you can buy the conversion kit for yourself – but if you're in the U.S., you might have trouble finding the host car.

This means dealing with the glass shop, being without your car for a day or two, having a potentially leaky windshield and, ...