What do you use for riding inside. When it's raining, when it's -10, when the roads are caked in snow, etc.

Personally, I use an old turbo trainer I picked up for 20 bucks, and a spare wheel. Paired with a bluetooth heart rate monitor I bought used for 10 bucks, and a speed sensor I bought for another 10 bucks, the whole thing works pretty well in Zwift, where I just cycle through new free trials because fuck paying 15 bux a month to ride my bike a couple of days a month.

Recently I've been interested in GTA bike V, which is a free mod that does half the same shit of letting you ride your bike in a virtual world, but it's lacking a basic interval training mode, and it has no online features so you can't race people. It'd be nice if I could find another windows program that just read my power meter over bluetooth and show intervals, but all the obvious options like trainer road and shit require you to sign up for their bullshit monthly payment stuff because it seems like 99% of people who use exercise bikes are complete morons.