When I´d booked them back to back overnight trains sounded like a good idea... by the time we reached Varkala on the south west coast of India I´d seriously rethought that decision! Fortunately we didn´t have anything more taxing to do than sit on a beach for the next few days.
http://www.travelblog.org/Asia/India/Kerala/Varkala/blog-389730.html
