So i often use the Samsung Health application on my phone as a pedometer and i noticed that it came with a Heart Rate Measurement tool, I often check my bpm and i became pretty freaked out when i was laying in bed feeling pretty sleepy and it was at 46bpm, though during the day it often sits at 60 - 64 depending on what i'm doing.

Does anybody know if this tool is inaccurate? or should i start panicking :(