It can happen to you on your Samsung Galaxy S5 when you open the Fitness app S Health that the following error message appears on the display:
"Unfortunately S Health has stopped"
If the error message appears on your device too, then please use the following solution:
The above error message appears mostly when you have disabled apps from Samsung in the application manager. The background is that S Health is accessing a number of apps that are part of Samsung.
Maybe you have identified them as "bloatware" and deactivated them via the application manager. This you must now be undone. Only with all applications that are pre-installed by Samsung on the Samsung Galaxy S5 S Health will work properly.
And so you can reactivate your disabled applications via the application manager:
Open on your Samsung Galaxy S5 the App Menu --> Settings --> Application Manager --> Tab "Disabled"
Tap here now at all apps, which may have to do with Samsung and S Health. Tap on an app so that the app info opens. Select the button "Activate", which means that the app is now listed again in the list of enabled apps.
Subsequently, restart the Samsung Galaxy S5. All reactivated applications should now get the opportunity to update via the Internet, therefore enable Wi-Fi or your mobile data connection on your phone.
After this procedure, it should be no problem to use the S Health app on the Samsung Galaxy S5.