Treadmills - The Good, the Bad, and the Ugly A treadmill can be a very useful tool to improve your cardiovascular fitness. It is also a good option for those who have injuries. It is simple to use and safe. Treadmills are great to train for intervals and high intensity. https://treadmillsforsale81431.qowap.com/84306462/you-ll-never-guess-this-treadmill-s-benefits