Many of those involuntary actions are mysterious, annoying, just plain weird.

许多不自觉的行为都是难以解释的、烦人的、很奇怪的。

It controls your body's involuntary actions like breathing, heart rate and blood pressure.

它控制着你身体的无意识动作，比如呼吸、心率和血压。

So your brain controls all the voluntary and involuntary actions of your body.

所以你的大脑控制着你身体的所有自愿和非自愿行为。