Ive found that when dping front squats or recording weight training activity that is olympuc lifting or crossfit related. the front rack position causes my forearm to accidentally press the button on a fenix 5. I will try this on a 935, but I only have the 920xt at the moment. This problem is more pronunced on the fenix 5 . due to the size of the watch, any front rack olympic lifting may have you accidentally pressing the back button
For the 935 this would be extremely handy for multipart events too. I messed up my last half iron activity by accidentally pressing LAP. I've hot keyed DOWN + START/STOP to manually lap but just need to disable the normal one now.