Hi there! I’m sorry to hear the Workout Planner MuscleFit app has crashed and is frozen on your Windows device. Let’s work through this together to get it back up and running.

To start, could you tell me a bit more about what you were doing in the app when it locked up? For example, were you starting a workout, changing settings, or something else?

Meanwhile, here are some initial steps to try to unfreeze and fix the app:

1. Force Close the App: Since the app is frozen, use the Task Manager to end it completely. Press Ctrl + Shift + Esc to open Task Manager, find the MuscleFit app under the Apps or Processes tab, select it, and click "End Task."

2. Restart the App: After closing, reopen the app and check if the issue persists.

3. Restart Your Device: Sometimes a fresh start can clear temporary glitches. Restart your Windows 10 machine and try the app again.

4. Check for Updates: Make sure the app is updated to the latest version, as updates often fix bugs. Since you’re on Windows, check if there’s a Microsoft Store app update or if you’re using a web-based or desktop version, verify the update source.

5. Clear Cache or Data (If possible): Although Windows apps may not always let you clear cache from settings, if MuscleFit has a settings menu with cache or data options, try clearing those.

6. Reinstall the App: If the problem continues, uninstall the app completely, then download and install the latest version again.

If you've already tried some of these, please let me know which ones so I can help you with the next steps. Also, do you get any error messages, or does it just freeze without any alert?

Once we try these, I can guide you further based on what happens.

Are you currently logged in with a user account on the app? Sometimes logging out, then logging back in after reinstall can help too.

Let me know so we can get you back to your workouts!