We used to have to count our paid breaks as on-duty time until about 5 years ago. We were told that some lawyer for UPS realized that we should count it as off-duty, especially since it could help out UPS hours wise.
The FMCSA has 2 requirements for logging time as off-duty, and a paid break is within the scope of those rules. We can leave the package car or tractor, and pursue whatever we want during that break. We can go inside a restaurant, golf, swim, go to a gym and workout...
Yes, I know, what can you do in 10 minutes, but it does satisfy the requirements of pursuing activities of our choosing.
The 2 requirements are as follows under. Judge for yourself as to what you are allowed to do during your break. UPS may have you count them against your 60/70, but, that is of their choosing, not the DOT's.
1. The driver is relieved of all duty and responsibility for the care and custody of the vehicle, its accessories, and any cargo or passengers it may be carrying.
2. During the stop, and for the duration of the stop, the driver must be at liberty to pursue activities of his/her own choosing.