Sleep recording on android calender

[SunsetRunner]

Hi I have recently got a new android phone and it seems my sleep tracking is being recorded onto the calender. How do I deactivate this ? I'm not using if this then that app. It seems to have started this automatically.

Thanks for any advice

[Rich_Laue]

Sleep should not be directly posted to the calendar. 

IFTTT would be needed to do this? 

Fitbit can only get access to read your calendar app, not write to it 

In any case what does the calender entry look like? 

[SunsetRunner]

Here is an image. I haven't installed ifttt for it to have used this
app.thanks