And the most Velofel interesting feature with this workout is that you can customize the speed according to your body capacity. Keep two things in mind when you work out: progression and overload. Progression is necessary for improvement while overload is compulsory for building stamina. Your body can certainly take a beating once you get too immersed in your workaday world. Your body may be dragged into all kinds of discomfort especially if you stay in the office for too long or if you exhaust yourself in sports or any other physical Velofel activities..