While that might conceivably be true, it still sounds an extraordinary claim. If you'd said 1-3 days it would be plausible, if you say 3-7 days it goes against

While that might conceivably be true, it still sounds an extraordinary claim. If you'd said 1-3 days it would be plausible, if you say 3-7 days it goes against most people's experiences so it's only natural you get asked evidence/citations.