Having bought and sold houses and lived with parents who did it a LOT and mom who is an architect and interior designer- staging a house doesn't mean removing everything and putting in something else.. it means neatening it up so it looks usable, and then removing things that might impede someone seeing it as their own... adding things to make the rooms look functional and designable. Make sure that it looks like it can be lived in and EVERYTHING has a home. Bikes in the garage or a workout space, but if there is any question about a room being listed as a bedroom having room for a bed, etc.. better to make it look like a bedroom than a craft room, office or workout room... if its big enough that it can be imagined in other ways even with the workout gear, and that is minimal enough to not make the room look small, leave it.. we had my bike on a trainer in the family room when one house sold... it was the spot we had taken out the loveseat to put it in... there was plenty of room to picture it with other furniture- it actually looked bigger with the bike than the loveseat!