Your Apple Watch sleep score will likely drop when you're aged 65+ — here’s why doctors say not to panic

Woman sleeping on her side with a smart watch on her wrist and her phone on the bedside table, with inset of a 'Low' Apple sleep score of 51 .

As a senior with a smart watch you might notice that your sleep score just isn't hitting the high numbers these days, and it's likely down to one metric: sleep fragmentation.

From circadian shifts to aches and pains, there are many reasons why it's perfectly normal for your sleep to be more fragmented as you age.