Hiya Lyn
I've not done loads and loads of exercise - I've upped the amount of walking I do, and I've kinda taken up mountain boarding/powerkiting (i'm a bit crap though + we've not really had the weather to do it much) I did go totally mad with the gym and kickboxing a couple of months back - but it wasn't really suiting me - it really slowed my weightloss (I think I started building muscle) and it was too intensive for the number of calories I was taking in and started to make me hungry so I've put that on hold til I get to my goal weight.
In regards to loose skin - I have a reasonably flat tummy but with like two smallish "tyres" (how grim does that sound) which I'm hoping will disappear as I lose more but I can't be sure and even if it does go I'm not sure whether this will leave me with loose skin (I am a bit worried that it might but if it comes to it I'll seriously think about surgery) but skin-wise I'm not doing too badly I think it's all snapping back into place - I'll let you know once I reach goal and maintained for a bit if you want?