changing red muscle fibres in white one

I read that white muscle fibres are the good ones for sprinting. Are there any methods in changing the red in white ones?

yeah… if you see a red fibre, just destroy it and replace it with a white. you can get 'em at

You cannot change a red muscle fiber (also known as Type I) into a white muscle fiber (known as Type IIb). What you can do, is train the third group of muscle fibers (called Type IIa) which can take on the characteristics of either white or red, to behave as though it were a white muscle fiber and vice versa. explosive medball exercises can help in creating a transition as well as speed work.