Originally Posted by
Inertianinja
PS - people often are amazed that the bike doesn't fall when you use rollers; it's hard to explain gyroscopic stability. but it's easy to demonstrate. take a wheel (off the bike), hold it by the skewer, and wobble it around. easy. then spin the wheel and try that while the wheel is spinning, notice how it resists you. magic!
[education rant] sadly, most kids never get to take physics to understand the simple principle[/rant]
+1 for rollers. if you want to go hardcore, there's always resistance unit you can buy. but my rollers are for the dog days of winter only, during which i won't be doing much intensity efforts anyway.