Meditation is something I definitely don't do enough of. On the odd occasion in which I have given it an honest attempt, I always come out with a refreshed mind. Being an active individual, this has also made me consider doing yoga, which I may look into once the summer begins.
For people like me who have next to no experience in meditation, it is nearly impossible to maintain an empty mind for more than a few seconds - the attention deficit that has resulted from our high-information generation. Thankfully, however, there is a website that walks you through and helps you maintain zen for the duration of the meditation. If it weren't for this site, I'd end up with a mind far from empty (which is the goal in meditation), and thus ruin the whole exercise. Finishing a cycle will give you vigor and clarity of mind to either start your day, or diminish your day's accumulated stress.
I can't name off all the benefits since I personally have experience very little, but I can say that I always feel energized, and with a mental clarity that allows me to focus on what needs to be done, not to mention that stress is completely abolished once you come back into consciousness.
This article outlines the benefits of meditation to a greater extent, which I admittedly have yet to experience myself.