If your last morning jog left you with muscle spasms in your legs that make it painful for you to run, switch into an easier activity like walking. Do not force yourself to resume your regular routine while suffering from muscle spasms or coming off from an attack. Even if the spasms have stopped, they can easily come back once triggered. Gradually ease into your regular routine by taking up similar but easier activities until your muscles have fully recovered. http://www.strongmenmuscle.com/jacked-muscle-extreme/