Why is it that I only have pedal-related incidents when I'm riding with other people?

I never fall when I'm by myself but have had 3 falls in the last ten days, 1 w/ my husband (long back story which I won't explain) and two yesterday on a group ride. The first one didn't hurt much but looked "bloody awful" because it was on the healing skinned knee from last week. The other one didn't leave any visible evidence but I can definitely feel where I landed on both hips!

I think when I'm riding by myself it is easier to be aware of what's around me, when I might need to stop, less distractions and more choice/control of my decisions than in a group.

Right now, a couple of ibuprofen are in order though to get over my bruises from yesterday.

Sharon