How many sit-ups?

[ah_dut]

Nah, 100 is the limit, used to be more but I've been focusing away on the one armers. And yes, I do add weight in the form of weight plates in a backpack to get up to 75k...or about 165lbs...for a good few reps so I wouldn't say I'm too wimpy

Hmm, I've read some negative things about the ab roller. They're not easy to find these days either.

This looks like it might be useful though:

http://www.bestabs.com/Resources/Exe...n=1&exercise=2

The Swiss Ball is useful but don't expect miracles