I can do the splits and have been able to do them since I was a teenager. However, I trained for quite a while and just couldn't do them fully. So one day I bought a stretching machine and have been able to do them ever since. Now, every once in a while if I lag on my stretching and am a little tight I spend about two to three day's working on the machine and I am right back to full splits. Get yourself a stretching machine and use it.