This is exactly what we talk about at 16:00 minutes in the video on my latest blog post. Basically I'm interviewing a lady who does her own thing helping students with uni applications where she pulls apart why my personal statement worked so well i.e. got an Oxford interview, plus acceptances everywhere else. For 5 years-ish I did gymnastics and wanted to include it in the statement, but it was no way related to my degree and I wasn't even doing it at the time! My full statement is on the blog if you'd like to see how I did it, plus the lady is doing a free webinar on personal statements next week. The question is; what quality will you draw on from that experience that will be helpful at university?