Sweat it all out

Why is when you exercise if you don't sweat you feel like doing nothing or not doing it properly. Its like sweat is a sign its working. I have started David Kirsch's 7 - day prescription and I don't always sweat in every exercise session now even thou I'm still working out. I think it will do something for my body . Time will tell watch this space for David Kirsch's 7 - day prescription updates its a mix of half an hour sessions focusing on different areas of the body or sessions like power body,cardiosculpting boot camp and restorative stretch sessions. Its rather fun exercises and it certainly pushes you to your limit but you dont always work up a sweat.