Boobz, awesome stuff, as always. 

I am guilty of usually snaffling a few fries / bite of nugget, etc, when taking the DC for their happy meals, too. 
Purple good luck with the 10k, let us know how you got on.
Re the push ups. I think we had a similar discussion on the thread (probably the previous one) a while back and someone linked to some professional advice saying better to a) have knees down but full range of motion (ie chest to floor), rather than b) up on feet but not getting chest to floor? I know I did the same as Sarah, ie switched from b) to a). At first I couldn't get my chest anywhere near the floor, even with knees down, but now I can (although I still find it feels really weird, like my arms don't naturally bend that way!
). I definitely couldn't get chest down with knees up though. PiYo has a good halfway modification where you put just one knee down. So, in conclusion... 
re best way to progress from here!
poppy I get knee-clicking occasionally, but often get ankle and hip clicking. Makes me feel old!!
Have done PiYo strength intervals today. Damned if that's going down as "yoga" or "Pilates" on MFP! Have put it as "low impact aerobics" but I'm sure even that must be understating it! It's not even that I want the extra calorie credit (well not just that
), more that I want some acknowledgement of how bloody hard I worked!! 