Way of the harmoni

On my way home from work my eyes got caught by these Aikido practitioners. They vere doing some repetitions with a wooden sword like: step-to-the-side-and-cut-his-legs :-)

I've done some martial arts myself, but now it's down to a run through the park every now and then. But I do miss the feeling of harmoni and the all absorbing feeling of bodycontrol one gain in the training.
I hav'nt found any martial arts blogs - please send me an email if you know of any....