Want to expand your home gym or build one from scratch? Amazon has a cheap home gym promotion you don't want to miss.

Today only, Amazon is offering up to 30% off Bowflex, Nautilus, and Schwinn exercise machines. After the discount, prices start at $139 for the Bowflex SelectTech Adjustable Bench. This is an unusual sale for this time of year. (Usually, home gym specials like this are found in January.)

Amazon says 30% off, but we found several items at 60% off or more. Sale ends today only.