I love my rollers too, especially since they were a new trick for this old malkin. I don't do anything remotely tricky and my bum does get more tired, because I am rather anchored to my position.

I always roll in the hall. For a year I was terrified of what would happen if I rolled off, but then my husband tried the rollers and discovered that rolling off results in a tremendous clattering of bike in the hall, but no harm done.

I sometimes catch my balance with my hand or shoulder to the wall, but one time I did get too engrossed in a recording of Brandenburg Concertos, and ended up off the rollers, where I also made a tremendous clattering, but apart from disrupting the music, no harm. I clipped out fine, and ended up standing up, holding the bike.

I think riding rollers has improved my balance on and off the bike.

This winter on the tandem we hit a nasty patch of ice on the road, and much to our mutual surprise, we did not fall. Was it angelic intervention or skill developed by riding rollers? Either one qualifies as miraculous to me.