Me again?

Like a new chap in the making,
I wake up every morn,
With a zillion cells of mine dead,
And a zillion new ones reborn;
So am I essentially the same me,
That hours ago went to bed,
Or merely a new flesh,
Of a yesterperson half alive half dead?
With memories of a me in relay,
In seemingly long iterations,
Perpetuating another day,
Through survival tools and actions.