Q: Hi mike!If i put weights on my stomache when doing situps will it be more benificial to me?Thanks!

A: Sure, that's a good way to make the exercise more intense. This especially makes sense if you can do many (20 or more) situps in a row. I would advise keeping the weight up more on the chest than the stomach for maximum effectiveness. Just remember that situps alone will not make you lose a lot of weight or give you a six pack -- you need a complete diet and weight training program for that as described here