what are some good ab or stmach work outs that can tighten up bigg stomachs as u lose weight and prevent from haveing lose slightly hanging wrinkley skin??

heyy how r u... i new to this site.. i joined because i wanted to learn more about weightloss because i actually wanna lose weight!.... i am 18 years old 6.1 and im about 275 lbs... most of the largeness is in stomach! i wanna lose weight but im scared of haveing exess skin hanging ... stomach is no...

thats really good!!! you look great!!