I tried spin classes at my local gym, but hate using the spin bike, always feel like i am going to hyperextend my knee as i get tired and stop peddling yet the spin bike keeps going. I bought a cyclops indoor trainer (Physical spin bike), i love it as i can coast like a normal bike. Did not think i would enjoy it but i run a TV in front of me with either the sufferfest videos or netflix and time flys. Good for bad weather days or days that i do not feel like going out