Fall detection sensitivity levels is very important, 1 being the least sensitive and 10 being the most sensitive. So we always suggest going with a 6 or 7. Test the device, if you feel it's too sensitive or it's going off for no reason causing false positives, just decrease the sensitivity.
On the watch
Step 1
On the watch, scroll to the right to find the option 'More' and tap
Step 2
Tap on 'Settings'
Step 3
Find 'Fall detection sensitivity' and select 4