I don't mean in bed, I mean on a bike. Does the size of the seat matter? I notice that I can get rather uncomfortable sometimes on my bike seat. It doesn't absorb any shocks and it makes my butt ache. Would you recommend a gel-seat? I'm confused because some people seem to think big seats are better while others seem to think just the opposite. I've heard some people say that a comfy big seat can cause lower back problems and such. What should I do? It's a new bike so maybe my body will get used to it eventually?