Some recurring dreams, any ideas?

Hey guys, I have been having two recurring elements in my dreams recently, one seems quite common and a bit of google searching came up with some answers (fighting but not being able to hit hard - lack of self confidence apparantly), but finding an interpretation for the other was difficult, and I was wondering if anyone here had an idea.

I'm running a lot (for varying reasons), but instead of running along the ground, I find it easier to run on the air, about half a foot off the ground. I go much faster and every time I do it I get the feeling I am using an old skill I haven't used for sometime (like if you rode a bicycle after not riding for years). I return to the ground periodically but most of the time is spent doing this "air running" slightly above ground.

Any ideas as to what this could mean - I know the running has its own meaning but the air running?

I use to have the same drean if punching people but not being able to do any damage. I had them though because I do karate and I was questioning wether I realy could or not but once I realised well duh I can I do all the time they went away. I don't know about the air running though. Maby you wish you could run on air. lol