First of all it's happening to many and just relax, sleep when you are tired.
Your body knows when it needs rest.

There could be many reasons this is happening to a lot of people.

It could be through hyper vigilance brought on by the trauma from fear over covid and the constant fear porn being pumped out putting your subconscious into a hyper vigilant mode.

It could be we're all re-acting to this increased resonance of the earth, which is through the roof.

It could be medication, stress, vaxxx.

Regardless worrying about it only add to it.

Relax , adapt, it too will change.