Recommend a basic turbo trainer

[pogofish]

Well, so long as nobody else is trying to get-on with life within range of your training, fine.

 

[soulman]

^ yep and using them in a flat is just plain obnoxious to those around you.

 

[Herbsman.]

You only need a 20min sesh for it to be effective, and 20mins of trainer use during the day is no worse than having a tumble drier or washing machine on