Got a spin bike - up to 2hrs per night this week! Sorry if there's a stigma with cyclists vs spin bike owners. I have a mountain bike but was never using it. Since the gyms were shut, I got a spin bike and have been on it after I put my daughter to bed. I started at 30 mins, then an hour, now I'm up to 2hrs and am loving it. 

One question though, does the butt-ache ever go away?