How to Log Workouts in iOS 18 Journal App

Apple’s iOS 18 expands the Journal app’s capabilities by deepening its integration with the Fitness and Health ecosystems to record workout completion metrics automatically. Through the Journaling Suggestions framework, the app detects physical activity tracked via an Apple Watch or compatible third-party apps, compiling vital fitness metrics such as duration, workout type, and calories burned into ready-to-use reflection prompts. This article explains how iOS 18 captures these activity metrics and how users can log their fitness data into the Journal app.

Integration with HealthKit and Fitness Data

The Journal app relies on on-device machine learning through the Journaling Suggestions API, which securely accesses data from the Apple Health and Fitness apps. When you complete an activity—such as an outdoor run, strength training, or a high-intensity interval workout—HealthKit registers the session’s completion and passes the relevant metadata to the suggestions engine without exposing your raw health data to external servers.

Physical Activity Metrics Recorded

When logging an activity prompt in iOS 18, the Journal app imports several core metrics directly into the entry:

  • Activity Type: The specific sport or routine completed (e.g., Outdoor Walk, Functional Strength Training).
  • Duration and Time: The exact start time, end time, and total elapsed duration of the workout.
  • Energy Burned: Active calories and total calories expended during the session.
  • Distance and Pace: Metric breakdowns including total distance covered, average pace, and elevation gain for supported outdoor workouts.
  • Location and Routes: GPS-mapped routes recorded during outdoor workouts can be attached alongside the workout card.

How to Log a Completed Workout Entry

Logging activity in the Journal app follows a simple, direct workflow:

  1. Open the Journal app on your iPhone running iOS 18.
  2. Tap the + (Plus) button to start a new entry.
  3. Select the Recommended tab to view your Journaling Suggestions.
  4. Scroll to the Workouts or Activity section, where recently completed fitness sessions appear as modular cards.
  5. Tap on the desired workout card. The app creates a new entry containing the workout summary badge.
  6. Add personal reflections, notes on perceived exertion, photos, or audio recordings to complement the automated stats.
  7. Tap Done to save the entry.

State of Mind and Wellbeing Correlation

A key addition in iOS 18 is the tighter link between physical activity and mental well-being. When saving a workout entry, users can log their "State of Mind" directly within the prompt. This allows individuals to track how specific workout completions affect their immediate mood or overall daily sentiment, creating a holistic record of both physical exertion and emotional health.

Privacy and Suggestion Settings

All workout logging is optional and governed by strict privacy controls. Users can manage how activity data feeds into the Journal app by navigating to Settings > Privacy & Security > Journaling Suggestions. From here, you can toggle Activity on or off, clear previous suggestion history, or specify whether the app can use workout completion triggers to remind you to write reflections.