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Sit and reach - modifications?

I'm starting a new program tomorrow with a fitness test (I've done the FB one a few times now) and it got me thinking... I carry my weight in my midsection and I'm wondering if anyone has a similar issue to me where my stomach physically impedes me from reaching as far as I could otherwise. I find the same issue with many yoga poses as well and it feels frustrating that in terms of flexibility I could go further. Anyone else? Any tips/tricks/modifications to share?