Do you sometimes lose count when saying your Rosary?

When you say your Rosary (as I often do) while engaging in some other activity, whether it be walking, driving, folding laundry, etc., it becomes pretty easy to lose count of whether you have said 10 Hail Mary's for each decade. As I continued reading The Rosary Workout today, Peggy Bowes offered this wonderful solution: "All extra prayers are offered for the Souls in Purgatory, and I ask my guardian angel to finish any prayers that I forgot." I love it!