Determination and presentation of customized notifications

1. One or more computer-readable media comprising computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:

accessing historical fitness data received by a fitness application of a user device during a plurality of periods that together correspond to a historical period;

accessing current fitness data received by the user device and tracked by the fitness application during a current period;

determining, based at least in part on the historical fitness data and the current fitness data, whether a probability threshold has been met, the probability threshold representing a likelihood that a user fitness goal will be achieved prior to a conclusion of the current period;

in accordance with a determination that the probability threshold has not been met, determining a coaching notification based at least in part on the current fitness data, the coaching notification identifying the user fitness goal and including a suggested action for achieving the user fitness goal prior to the conclusion of the current period; and

providing the coaching notification for presentation at the user device.

2. The one or more computer-readable media of claim 1 , wherein the computer-executable instructions further cause the one or more processors to perform operations comprising, in accordance with a determination that the probability threshold has been met, refraining from determining and providing the coaching notification.

3. The one or more computer-readable media of claim 1 , wherein determining whether the probability threshold has been met is performed at a first time, and wherein the computer-executable instructions further cause the one or more processors to perform operations comprising:

accessing additional fitness data received by the user device and tracked by the fitness application during an additional period;

determining, at a second later time, whether the probability threshold has been met at the second later time;

in accordance with a determination that the probability threshold has not been met at the second later time, determining a different coaching notification based at least in part on the additional fitness data; and

providing the different coaching notification for presentation at the user device.

4. The one or more computer-readable media of claim 1 , wherein the user device comprises at least one of a wearable electronic device or a handheld electronic device.

5. The one or more computer-readable media of claim 1 , wherein the historical fitness data is tracked by the fitness application while the user device is in a worn state.

6. The one or more computer-readable media of claim 1 , wherein the user fitness goal is one of a plurality of user fitness goals comprising a stand goal, a caloric burn goal, and a move goal.

7. The one or more computer-readable media of claim 1 , wherein the suggested action identifies an activity and an amount of time for performing the activity prior to the conclusion of the current period.

8. A computer-implemented method, comprising:

accessing historical fitness data received by a fitness application of a user device during a plurality of periods that together correspond to a historical period;

accessing current fitness data received by the user device and tracked by the fitness application during a current period;

determining, based at least in part on the historical fitness data and the current fitness data, whether a probability threshold has been met, the probability threshold representing a likelihood that a user fitness goal will be achieved prior to a conclusion of the current period;

in accordance with a determination that the probability threshold has not been met, determining a coaching notification based at least in part on the current fitness data, the coaching notification identifying the user fitness goal and including a suggested action for achieving the user fitness goal prior to the conclusion of the current period; and

providing the coaching notification for presentation at the user device.

9. The computer-implemented method of claim 8 , further comprising, in accordance with a determination that the probability threshold has been met, refraining from determining and providing the coaching notification.

10. The computer-implemented method of claim 8 , wherein determining whether the probability threshold has been met is performed at a first time, and the method further comprises:

accessing additional fitness data received by the user device and tracked by the fitness application during an additional period;

determining, at a second later time, whether the probability threshold has been met at the second later time;

in accordance with a determination that the probability threshold has not been met at the second later time, determining a different coaching notification based at least in part on the additional fitness data; and

providing the different coaching notification for presentation at the user device.

11. The computer-implemented method of claim 8 , wherein the user device comprises at least one of a wearable electronic device or a handheld electronic device.

12. The computer-implemented method of claim 8 , wherein the historical fitness data is tracked by the fitness application while the user device is in a worn state.

13. The computer-implemented method of claim 8 , wherein the user fitness goal is one of a plurality of user fitness goals comprising a stand goal, a caloric burn goal, and a move goal.

14. The computer-implemented method of claim 8 , wherein the suggested action identifies an activity and an amount of time for performing the activity prior to the conclusion of the current period.

15. A user device, comprising:

a memory comprising computer-executable instructions; and

a processor communicatively coupled with the memory and configured to execute the computer-executable instructions to at least:

access historical fitness data received by a fitness application during a plurality of periods that together correspond to a historical period;

access current fitness data tracked by the fitness application during a current period;

determine, based at least in part on the historical fitness data and the current fitness data, whether a probability threshold has been met, the probability threshold representing a likelihood that a user fitness goal will be achieved prior to a conclusion of the current period;

in accordance with a determination that the probability threshold has not been met, determine a coaching notification based at least in part on the current fitness data, the coaching notification identifying the user fitness goal and including a suggested action for achieving the user fitness goal prior to the conclusion of the current period; and

provide the coaching notification for presentation at a display.

16. The user device of claim 15 , further comprising the display.

17. The user device of claim 15 , wherein providing the coaching notification for presentation on the display comprises providing the coaching notification to a second user device for presentation of the coaching notification at the display of the second user device.

18. The user device of claim 15 , wherein determining whether the probability threshold has been met is performed at a first time, and wherein the processor is configured to execute additional computer-executable instructions to at least:

access additional fitness data tracked by the fitness application during an additional period;

determine, at a second later time, whether the probability threshold has been met at the second later time;

in accordance with a determination that the probability threshold has not been met at the second later time, determine a different coaching notification based at least in part on the additional fitness data; and

provide the different coaching notification for presentation.

19. The user device of claim 15 , wherein the user device comprises at least one of a wearable electronic device or a handheld electronic device.

20. The user device of claim 15 , wherein the user fitness goal is one of a plurality of user fitness goals comprising a stand goal, a caloric burn goal, and a move goal.