Activity Timeout Override
Activity Timeout lets you determine how much time needs to pass between exercises for them to count as two separate sets.
For instance, let's say you set an Activity Timeout of five seconds. If you perform two push-ups, take a three-second break, and then perform two more, your Atlas watch will count that as one set since it was still under the five-second Activity Timeout.
However, if you take a seven-second break in between those reps, it will be counted as two sets.
If you want a more challenging workout, you should set a shorter Activity Timeout. If you want to be more lenient, increase it.