I've always been extremely ineflixble. Never able to touch my toes (with legs straight bending over of course) after 2 weeks of yoga it was no problem. The additional fluidity and range of motion has been excellent. I play a lot of table tennis and it's opened up a lot of shots at my outer range of motion that weren't accessible or accurate before. Like being able to take a big lunge and fully extend an arm while returning a shot. Something you'd have to work into is effortless and fluid.  It's great. I don't buy into the meditative spiritual hippy shit though. I wish they'd cut that out but fortunately the whole goal during that meditative cool down part is to just sit there with a relaxed expression so I just fake it until it's not rude to get up and leave.