Mark Wahlberg works out at 2 am — is it the best time?

Daddy’s home — and he’s working out at 2 a.m.

For many, Sunday is built for sleeping in, eating brunch and easing into the coming week. For Mark Wahlberg, when the clock strikes 2 on the Sabbath, it’s time to boogie to the gym.

The 53-year-old movie star, entrepreneur…