Hi is this aloud to be worn on shabbos if someone wears it every day and night ?
Not permitted on Shabbat.
Halacha would be the same for WHOOP?
If it is assur, can you please elaborate if the issur is collecting data (measuring) in shabbat or something else?
Same issue.
It’s not clear what exactly would be the Issur. There are a number of potential Issurim, although no one clear Issur. In any case, Rabbi Abadi did not allow.