I waited 6 weeks before I started sit ups. It didn't make me sick just a little sore at first but all that worked its way out in a couple of days. Of course I eased into my exercise since I hadn't done a lot since I quit playing football. The skin is a little loose but nothing out of the ordinary. It has tightened up since I started exercising. Hope it continues to improve. I am flattered about the comments. Hottie and cute has never been used as descriptive words when people are talking about me. I have always been the funny fat guy. I can get you laughing but have never been much to look at but I appreciate the kind words. This journey is about getting healthy so I might live into retirement age not about looking good that's just extra gravy! No pun intended! If I have some loose skin it won't bother me because i have been carrying around another grown person around my waist for years now so it can't be much worse than that right? The biggest accomplishments is I'm off my Metformin totally with diet controlled blood sugar and my sleep apnea is much improved. You can actually sleep in the same house with me now and not be up all nite from my snoring! I got another 107 lbs to lose so this is just the beginning of the journey but I am motivated because I know that this is working and I am finally seeing results. I use to be hungry all the time and even with strict diet and exercise with a trainer the scale would barely move. Now the scales move everyday or so. I recommend the Premier Protein shakes. They taste good and fill me up. I drink 3 of them a day and have about 2-3ozs of protein based meal for supper i.e. chicken breast, tuna, fish, eggs, etc. this has worked for me so sticking with it! Good luck everyone on this marathon! I call it a marathon because I didn't put the weight on overnight and it is not going to come off overnight but it is has been the easiest diet to stick to and I have been dieting since I was a kid. I just hope that I can be a motivation to others like so many on this forum before me was a motivation to me! Good luck and God Bless!