What is the nature and workload of seminary study (particularly Eastern Orthodox seminaries)?

Having recently finished undergraduate studies, I'm rather exhausted academically and before I jump into another commitment, I want to know as much as possible. I do feel a calling for ministry, but I don't know if I'm ready to take on another academic challenge without a breather. What is the course load of a seminary program like? What is the writing load like? I'm asking this in particular reference to an Eastern Orthodox seminary; however, other denominations are more than welcomed to chime in--all answers are appreciated!