Sounds dumb but anyway, i heard that superfast fibers contract more strongly than fast twitch fibers. And i never thought of muscle contraction as something that has a magnitude (i thought of it as "1 or 0" meaning either contracted or not). So lets say we have two fibers, the same length and thi...

What I know so far about drugs (codeine, heroin, etc) is, the first time you take them you will feel better, think sharper, and act better, just like a supercharged engine. But as this goes on a regular basis, it will stop being efficient and causes addiction. So what I can understand of this, i...